WO2006028115A1 - Information recording medium, information recording device and method, and computer program - Google Patents

Information recording medium, information recording device and method, and computer program Download PDF

Info

Publication number
WO2006028115A1
WO2006028115A1 PCT/JP2005/016394 JP2005016394W WO2006028115A1 WO 2006028115 A1 WO2006028115 A1 WO 2006028115A1 JP 2005016394 W JP2005016394 W JP 2005016394W WO 2006028115 A1 WO2006028115 A1 WO 2006028115A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording
information
area
layer
recorded
Prior art date
Application number
PCT/JP2005/016394
Other languages
French (fr)
Japanese (ja)
Inventor
Kunihiko Horikawa
Kazuo Kuroda
Shoji Taniguchi
Masahiro Kato
Eiji Muramatsu
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Publication of WO2006028115A1 publication Critical patent/WO2006028115A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24038—Multiple laminated recording layers

Definitions

  • Information recording medium information recording apparatus and method, and computer program
  • the present invention relates to an information recording medium such as a DVD, an information recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such an information recording apparatus.
  • the two-layer type optical disc is positioned as the first layer on the most front side (that is, the side close to the optical pickup) when viewed from the laser light irradiation side when recording by the information recording apparatus. It has a first recording layer (referred to as “L0 layer” in the present application as appropriate), and further has a semitransparent reflection film located on the back side thereof (that is, on the side far from the optical pickup force).
  • the second layer it has a second recording layer (referred to as “L1 layer” in this application as appropriate) located on the back side of the transflective film via an intermediate layer such as an adhesive layer, and further on the back side.
  • L1 layer a second recording layer located on the back side of the transflective film via an intermediate layer such as an adhesive layer, and further on the back side.
  • a reflective film located on the side;
  • the L0 layer is irradiated with a laser beam for recording (or irradiated) so that the L0 layer
  • information is recorded by the irreversible change recording method or the rewritable method by heating or the like, and the laser beam is focused on the L1 layer, so that the information is collected on the L1 layer.
  • Recording by irreversible change recording by heating or the like Recording is performed by a irreversible change recording method by heating or by a rewritable method.
  • an OPC Opti
  • Opti optical disk
  • the type of information recording / reproducing apparatus the recording speed, and the like.
  • mum Power Calibration sets the optimum power for recording power. That is, recording power calibration is performed.
  • an appropriate recording operation on the optical disc can be realized. For example, when an optical disc is loaded and a write command is input, the light intensity is sequentially switched and the data for trial writing is recorded in the OPC area (PCA), so-called trial writing processing is executed.
  • PCA OPC area
  • the optimum power can also be set by OPC (so-called running OPC) performed simultaneously with the actual recording operation.
  • Patent Document 1 Japanese Patent No. 3159454
  • the recording condition of the recording layer on the back side (for example, L1 layer) when viewed from the laser light irradiation side is the same as that of the recording layer (for example, L0 layer) on the near side when viewed from the laser light irradiation side.
  • the recording layer for example, L0 layer
  • the majority of the current two-layer type optical disc is the force that records data on the recording layer on the front side after data is recorded on the recording layer on the front side.
  • the present invention has been made in view of, for example, the above-described conventional problems. It is an object of the present invention to provide an information recording medium, an information recording apparatus and method, and a computer program that enable appropriate recording power calibration even with an information recording medium having a plurality of recording layers. .
  • the information recording medium of the present invention irradiates a laser beam through the first recording layer for recording the recording information by irradiating the laser beam, and the first recording layer.
  • a second recording layer for recording the recording information wherein the first recording layer has a pre-recording area in which pre-information is recorded in advance, and the second recording layer is A calibration area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer at a position irradiated with the laser beam through the pre-recording area.
  • various types of recording information can be recorded in each of a plurality of recording layers (that is, the first recording layer and the second recording layer).
  • the plurality of recording layers may be formed in a laminated structure on one surface of the substrate, for example.
  • the first recording layer on the front side (or the near side) when viewed from the laser beam irradiation side includes a pre-recording area in which pre-information is recorded in advance.
  • a calibration area is provided in the recording area of the L1 layer corresponding to the pre-recording area (that is, the recording area irradiated with laser light through the pre-recording area).
  • This calibration area is a recording area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer.
  • the “optimum power” in the present invention is not limited to literally the most suitable recording power, but includes a wide range of recording power that can record information more appropriately during recording. It is the purpose.
  • the optimum power required here is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded.
  • the pre-recording area is not provided, it is not certain whether the recording information is recorded in the recording area of the first recording layer corresponding to the calibration area. Therefore, this calibration
  • the optimum power required by recording the pattern information in the recording area is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded.
  • the recording power is the optimum power when recording information is recorded on the second recording layer corresponding to the recording area of the first recording layer where the recording information is not recorded.
  • the pre-information is recorded in the recording area of the first recording layer corresponding to the calibration area.
  • the optimum power required here can be clearly recognized as the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded. That is, if the pre-recording area in which the pre-information is recorded is provided in the first recording layer corresponding to the calibration area in the second recording layer, the information recording medium according to the present invention is It has a great advantage.
  • the recording power can be appropriately calibrated (that is, the optimum power is obtained).
  • the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
  • the pre-information includes information recorded by irradiating the pre-recording area with the laser beam.
  • the pre-information can be recorded in advance relatively easily and appropriately by irradiation with laser light. Even after the information recording medium is manufactured, the pre-information can be recorded relatively easily by irradiating the pre-information area with the laser light by the information recording device.
  • the pre-information includes information recorded by a previously formed emboss pit.
  • the pre-information can be recorded relatively easily and appropriately by the embossed pits formed in advance when the information recording medium is manufactured.
  • the pre-recording area is larger than the calibration area.
  • the pre-recording area and the calibration area are associated in a strict sense. Even if it is not made, or even if there is a slight positional deviation, it is possible to appropriately irradiate the laser beam to the calibration area through the pre-recording area.
  • the pre-recording area corresponds to the eccentricity between the first recording layer and the second recording layer. Only the area may be configured to be larger than the calibration area! /!
  • an information recording apparatus of the present invention includes a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof), Calculating means for controlling the recording means so as to record the pattern information by irradiating the laser beam to the calibration area via a pre-recording area, and obtaining an optimum power of the laser light in the second recording layer; And a control means for controlling the recording means so as to record the recording information on the second recording layer by irradiating the laser beam with the determined optimum power.
  • the optimum power (particularly, the optimum power in the second recording layer) is obtained by the operation of the calculating means. Then, by the operation of the control means, the recording means is controlled so as to irradiate the laser beam at the optimum level. As a result, the recording information can be recorded with an appropriate recording power by the operation of the recording means.
  • the pattern information is recorded by irradiating the calibration area with the laser light through the pre-recording area by the calculating means, it is possible to enjoy various benefits of the information recording medium of the present invention described above. Become.
  • the information recording apparatus of the present invention can also adopt various aspects.
  • control means records the recording information on the second recording layer after recording the recording information on the first recording layer. Control the recording means.
  • the recording information is recorded on the second recording layer after the first recording layer is recorded. Therefore, it is possible to record the recording information under the recording condition that matches the optimum power obtained by the calculating means. That is, the recording information can be recorded on the second recording layer under the same recording conditions as when the optimum power is obtained. For this reason, it is possible to improve the recording characteristics of the recorded information.
  • the information recording method of the present invention is an information provided with a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof).
  • An information recording method in a recording apparatus wherein the recording means is controlled to record the pattern information by irradiating the calibration area with the laser light through the pre-recording area, and the second recording layer A calculation step for obtaining an optimum power of the laser beam in the step, and a control step for controlling the recording means to record the recording information on the second recording layer by irradiating the laser beam with the obtained optimum power. Is provided.
  • the optimum power is obtained in the calculation step, and the laser light is irradiated with the obtained optimum power in the control step.
  • the recording means is controlled to record the record information. Accordingly, various benefits of the information recording apparatus of the present invention described above can be enjoyed.
  • the information recording method of the present invention can also adopt various aspects.
  • a computer program according to the present invention causes a computer to function as the above-described information recording device (including various forms thereof). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
  • the computer program of the present invention if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Alternatively, if the computer program is downloaded to a computer via communication means and then executed, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • a computer program product in a computer-readable medium clearly embodies a program command executable by a computer, and the computer is connected to the above-described information recording apparatus ( (However, various forms thereof are also included). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
  • the computer program product of the present invention if the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or
  • a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product
  • the computer program product which is a transmission wave
  • the computer program product which is a transmission wave
  • the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
  • the first recording layer and the second recording layer are provided, the first recording layer includes the pre-recording area, and the second recording layer The layer contains a calibration area. Therefore, even an information recording medium having a plurality of recording layers has a great advantage that the recording power can be appropriately calibrated. In particular, the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
  • a recording means, a calculation means and a control means, or a calculation step and a control step are provided. Therefore, various benefits of the information recording medium according to the present invention described above can be enjoyed.
  • FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and is associated with a schematic cross-sectional view of the optical disc. It is a schematic conceptual diagram of a recording area structure in the radial direction.
  • FIG. 2 is a data structure conceptually showing an example of the data structure of the information recording medium according to the embodiment.
  • FIG. 2 is a data structure conceptually showing an example of the data structure of the information recording medium according to the embodiment.
  • FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium in the embodiment.
  • FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium in the comparative example of the information recording medium in the example.
  • FIG. 5 is a table showing conditions for recording data on the information recording medium in the present embodiment.
  • FIG. 6 is a data structure diagram conceptually showing a data structure of an information recording medium according to a first modification of the embodiment of the information recording medium of the present invention.
  • FIG. 7 is a data structure diagram conceptually showing a data structure of an information recording medium according to a second modification of the embodiment of the information recording medium of the present invention.
  • FIG. 8 is a block diagram conceptually showing the basic structure of the example of the information recording apparatus of the present invention.
  • FIG. 1 (a) is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention
  • FIG. FIG. 2 is a schematic cross-sectional view of FIG. 2 and a schematic conceptual diagram of a recording area structure in the radial direction associated therewith.
  • the optical disc 100 is implemented in the recording surface on the disc main body having a diameter of about 12 cm as in the DVD, with the center hole 101 as the center.
  • the lead-in area 102, the data recording area 107 and the lead-out area 108 or the middle area 109 according to the example are provided.
  • a recording layer or the like is laminated on the transparent substrate 200 of the optical disc 100, for example.
  • tracks such as a group track and a land track are alternately provided in a spiral shape or a concentric shape around the center hole 101.
  • ECC block is a data management unit based on preformat addresses that can correct errors in recorded information.
  • the present invention is not particularly limited to an optical disc having such three areas.
  • the lead-in area 102, the lead-out area 108, or the middle area 109 does not exist, the data structure described below can be constructed. Further, as will be described later, the lead-in area 102, the lead-out area 108, or the middle area 109 may be further subdivided.
  • the optical disc 100 constitutes an example of first and second recording layers according to the present invention to be described later, for example, on a transparent substrate, as shown in FIG. 1 (b).
  • the LO layer and L1 layer are stacked.
  • recording and playing back such a two-layer optical disc 100 In Fig. 1 (b), whether the recording / reproducing is performed in the LO layer depending on which recording layer the focusing position of the laser beam LB irradiated from the upper side to the lower side is applied to.
  • recording / reproduction is performed in the L1 layer.
  • this embodiment employs a configuration in which recording is performed on the L1 layer after recording is performed on the LO layer! / Speak.
  • the optical disc 100 according to the present embodiment is not limited to the two-layer single side, that is, the dual layer, but may be the two-layer double side, that is, the dual layer double side. Furthermore, it is not limited to an optical disc having two recording layers as described above, but may be a multilayer type optical disc having three or more layers.
  • FIG. 2 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the present embodiment.
  • the LO layer of the optical disc 100 includes a PCA (Power Calibration Area) 103, a recording management information zone (Recording Management Area) 104, a lead-in area 102, a data recording area 107 (not shown), and A middle area 109 (not shown) is provided.
  • the L1 layer includes a reserved area, a lead-out area 118, a data recording area 117 (not shown), and a middle area 119 (not shown). That is, the optical disc 100 is an opposite track path type optical disc.
  • the PCA 103 is an area used for processing for obtaining an optimum recording laser power (that is, calibration of the recording laser power).
  • the PCA 103 is used for obtaining the optimum recording laser power of the L0 layer.
  • “optimal” is not only the case where it is literally the most suitable, but also a broad meaning including the extent to which data can be recorded appropriately. More preferably, for example, as will be described later, the influence of asymmetry does not affect the recording operation, or the playback error rate and playback of recorded data. It is preferable that the jitter value power is low enough to substantially realize the state without affecting the recording operation.
  • the trial-written OPC pattern is reproduced, and the reproduced OPC pattern is sequentially sampled to obtain the optimum Recording laser power is required.
  • the OPC operation will be described in detail later.
  • the recording management information zone 104 includes various control information for controlling the recording of data on the optical disc 100 (for example, the disc status, recording strategy information, the optimum recording laser power value obtained by OPC, etc. ) Is recorded.
  • the lead-in area 102 and the lead-out area 118 are further subdivided.
  • the lead-in area 102 includes various zones (area) such as an initial zone, a pre-recording area 105, and a special border zone (Extra Border Zone).
  • the lead-out area 118 includes an area in which other data such as “00h” data is recorded, a margin area 116, and a PCA 113. The specific structure of the initial zone will be described in detail later (see Figure 4).
  • the special border zone has a size of 32 ECC blocks and is provided at the boundary between the lead-in area 102 and the data recording area 107.
  • a pre-record area 105 is provided in the lead-in area 102.
  • predetermined data for example, “00h” data or other arbitrary data
  • predetermined information may be recorded by the information recording apparatus.
  • the predetermined data may be recorded in the form of recording marks and recording pits formed by, for example, laser beam LB irradiation, or may be recorded in the form of embossed pits formed by a stamper or the like.
  • the recording area of the L1 layer corresponding to the pre-recording area 105 is provided with a PCA 113 as a specific example of the "calibration area" in the present invention.
  • This PCA113 is also used to determine the optimum recording laser power in the L1 layer, similar to the PCA103 described above.
  • a margin area 116 is provided so as to sandwich the PCA 113.
  • the margin area 116 has a size corresponding to the magnitude of the eccentricity between the LO layer and the L1 layer (for example, the eccentricity due to the bonding error or the eccentricity due to the deviation of the rotation center point of the optical disk).
  • the size of the recording area in the L1 layer including the margin area 116 and the PCA 113 is preferably the same as the size of the pre-recording area 105 in the LO layer.
  • the pre-recording area 105 has a recording area necessary for OPC in the L1 layer (that is, PCA113) and margin areas 116 corresponding to the eccentricity at both ends thereof.
  • the predetermined data is recorded in advance! / ,!
  • the eccentricity between the LO layer and the L1 layer is 0.03 mm.
  • the eccentricity is not a physical quantity that can be recognized in advance when the optical disc 100 is manufactured.
  • a pre-recording area 105 having a size may be provided in advance.
  • FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium according to the present embodiment.
  • the lead-in area 102 is further subdivided into an initial zone, a buffer zone # 0, a physical format information zone (R-Physical Format Information Zone), a reference code zone (Reference Code Zone), Includes buffer zone # 1, control data zone and special border zone.
  • a physical format information zone R-Physical Format Information Zone
  • a reference code zone Reference Code Zone
  • the control data zone is a recording area corresponding to the pre-recording area 105 in FIG. 2, for example, the standard type, disc size, and track path type applied to the optical disc 100. Etc. are recorded in advance. That is, the predetermined data as the pre-information in this case is not limited to “00h” or the like. It is preferable that the data is meaningful to appropriately indicate various control data.
  • the control data zone corresponds to the PCA 113 and the margin area 116, and the size thereof corresponds to the PCA 113 and the margin area 116 (for example, 0.36 mm or 0 as described above). 44mm etc.)
  • FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the comparative example.
  • the lead-in area 102 and the lead-out area 108 of the optical disc according to the comparative example also adopt the same data structure as that of the optical disc according to the present embodiment.
  • the optical disc according to the comparative example has a data structure recommended in the DVD (particularly, DVD-RZRW) standard.
  • the optical disk according to the comparative example includes buffer zone # 1 in which data is not recorded in a part of the recording area of the LO layer corresponding to PCA113. More specifically, compared to the optical disc 100 according to the above-described embodiment, the primary zone is a relatively large area and the control zone is a relatively small area (more specifically, it extends over 105 tracks). The size is about 0.078mm in the radial direction).
  • the pre-recording area 105 (that is, the control data zone) is provided in the LO layer corresponding to the PCA 113, and predetermined data is recorded in the pre-recording area 105 in advance.
  • This can be realized by making the LO zone initial zone a relatively small recording area and the control data zone a relatively large recording area as compared with the optical disk according to the comparative example. Even if the size of the area is changed in this way, there is no problem in data recording and reproduction because the data structure itself is not changed. Further, since control information and the like are recorded in advance in the control data zone, it is necessary to provide a special pre-recording area 105.
  • the data is recorded.
  • the OPC pattern described later can be recorded on the PCA 113 corresponding to the already completed LO layer. That is, it is possible to irradiate the PCA 113 with a laser beam LB emitted from an optical pickup, which will be described later, through the pre-recording area 105 where data has been recorded.
  • the optimum recording laser power for recording data in the L 1 layer corresponding to the recording area of the LO layer where data has already been recorded can be obtained appropriately and reliably.
  • the optimum recording laser power in the L0 layer can be obtained by performing V and OPC on the PCA103.
  • margin area 116 By providing margin area 116, the influence of eccentricity can be eliminated. Specifically, if the margin area 116 is used with force, the end of the pre-recording area 105 and the end of the PCA 113 may be shifted due to the eccentricity. That is, there is a possibility that the laser beam LB cannot be irradiated to the PCA 113 via the pre-recording area 105 that should have the same track number or address value in each recording layer! However, by providing a margin area as in this embodiment, it is possible to eliminate such deviation due to eccentricity and to irradiate the PCA 113 with the laser beam LB via the pre-recording area 105.
  • margin area 116 is not necessarily required.
  • the advantage of being able to eliminate the influence of eccentricity is the advantage that certain force data is recorded. It is not always necessary from the viewpoint of being able to ask! For example, if there is no eccentricity, or if the pre-recording area 105 and the PCA 113 can be associated with high accuracy, the above-described various benefits can be enjoyed without the margin area 116.
  • Margin area 11 Even if 6 is provided, it may be configured so that it overlaps the buffer area # 1 or the special border zone that sandwiches the control data zone of each margin area 116 force LO layer.
  • FIG. 5 is a table showing conditions for recording data on the information recording medium in this embodiment.
  • the LO layer is classified into three recording conditions, conditions 1, 2 and 3.
  • the L1 layer there are three types of recording conditions, conditions 2, 3 and 4.
  • the encircled numbers shown in the figure indicate the order in which data is recorded in each recording layer.
  • the recording condition 1 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer where data is not recorded. In particular, even after data is recorded in the LO layer (especially when the data is played back), no data is recorded in the corresponding recording area of the L1 layer.
  • the recording condition 2 in the LO layer is the same as the recording condition 1 in the saddle point when data is recorded in the recording area in the LO layer corresponding to the recording area in the L1 layer where data is not recorded.
  • Recording condition 2 particularly shows the case where data is recorded in the corresponding recording area of the L1 layer after the data is recorded in the LO layer (for example, when the data is played back). This means that even if data is not recorded on the L1 layer corresponding to the recording, the data is recorded on the L1 layer corresponding to the case where the recorded data is reproduced. This is because the quality (for example, the asymmetry value of the reproduction signal) is different.
  • Recording condition 3 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer in which the data has been recorded. In other words, the data is recorded in the LO layer after the data is recorded in the L1 layer first.
  • recording condition 2 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which data has already been recorded.
  • the data is recorded in the L1 layer after the data is recorded in the LO layer first.
  • the recording condition 3 in the L1 layer is the same as the recording condition 4 in the case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded.
  • This Recording condition 3 in this example shows the case where the data is recorded in the corresponding recording area of the LO layer after the data is recorded in the L1 layer (especially when the data is reproduced).
  • Recording condition 4 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded. In particular, even after data is recorded in the L1 layer (especially when the data is played back), no data is recorded in the corresponding LO layer recording area.
  • each of the LO layer and the L1 layer has the above three recording conditions! /.
  • the optimum recording laser power differs for each recording condition.
  • the optimum recording laser power required by the OPC performed in the PCA 103 described above corresponds to the optimum recording laser power corresponding to the recording condition 1 in the LO layer.
  • the optimum recording laser power required by the OPC performed in the PCA 113 corresponds to the optimum recording laser power corresponding to the recording condition 2 in the L1 layer.
  • the optimum recording laser power under other recording conditions in the L1 layer can also be obtained by separately providing PCA in the L1 layer in addition to the PCA113 shown in FIG. Absent.
  • control data zone As an example of the pre-recording area 105.
  • the present invention is not limited to this. If predetermined data is recorded in advance, other recording areas (for example, It is possible to use it as the pre-record area 105 even in the initial zone, buffer zone, etc.!
  • the optimum recording laser performance when data is recorded in the L1 layer corresponding to the recording area of the LO layer in which the data has already been recorded can be obtained appropriately and reliably. It is also possible to find the optimum recording laser power in the LO layer.
  • the same data structure can be adopted for a multi-layer type optical disk having a recording layer with more power than that described as a specific example of a two-layer type optical disk. That is, when viewed from the side irradiated with the laser beam LB (for example, the LO layer side), it corresponds to the calibration area in the innermost recording layer relative to the innermost recording layer.
  • a pre-recording area is provided in at least one recording layer, it belongs to the scope of the present invention. That is, even with such a configuration, various benefits of the above-described embodiments of the information recording medium of the present invention can be enjoyed.
  • FIG. 6 is a data structure diagram conceptually showing the data structure of the information recording medium according to the first modification.
  • the LO layer of the optical disc 100a includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107 (not shown), and a lead-out area not shown. 108 is provided.
  • the L1 layer includes a reserved area, a recording management information zone 114, a lead-in area 112, a data recording area 117 (not shown), and a lead-out area 118 (not shown). That is, the optical disc 100a is a parallel track path type optical disc.
  • This optical disk 100a of the parallel track path type also includes the pre-recording area 105 in the LO layer and the recording area of the L1 layer corresponding to the pre-recording area 105, as in the optical disk shown in FIG. 2 or FIG. PCA 113 and margin area 116 are provided.
  • the pre-recording area 105 may be the control data zone as described above, or may be another recording area! /.
  • the optical disc 100a according to the first modified example can also receive the same benefits as those provided by the optical disc 100 according to the present embodiment.
  • FIG. 7 is a data structure diagram conceptually showing the data structure of the information recording medium in the second modified example.
  • the LO layer of the optical disc 100b according to the second modification includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107, a reserved area, and a middle area 109. Is provided.
  • the L1 layer has a reserved area, a read-out area 118, a data recording area 117, a reserved area, and a middle area 119. It has been. That is, the optical disc 100b is an opposite track path type optical disc.
  • the optical disc 100b according to the second modification is provided with a pre-recording area 105 in the middle area 109.
  • the L1 layer PCA 113 is also provided in the middle area 109 accordingly.
  • the pre-recording area 105 is provided in the LO layer corresponding to the PCA 113 and the margin area 116, it is possible to receive the various benefits described above.
  • the pre-recording area 105 and the PCA 113 are provided in correspondence with each other, the above-described various benefits can be enjoyed. That is, if the pre-recording area 105 and the PCA 113 correspond, it may be in the lead-in area 102 (112) or the data recording area 107 (117), but the lead-out area 108 (11 Whether it is in 8), in the middle area 109 (119), or in other recording areas, it is possible to enjoy the various benefits described above.
  • FIG. 8 is a block diagram conceptually showing the basic structure of the information recording apparatus in the example.
  • the information recording device 300 is a device that records information on the optical disc 100 and reads information recorded on the optical disc 100 under the control of a CPU (drive control means) 354.
  • the information recording apparatus 300 includes an optical disc 100, a spindle motor 351, an optical pickup 352, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 356, an LD driver 358, an OPC pattern. It consists of generator 359 and bus 357.
  • the spindle motor 351 rotates and stops the optical disc 100. Operates when accessing. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a not-shown servo unit or the like.
  • the optical pickup 352 is a specific example of the “recording unit” in the present invention, and performs recording / reproduction on the optical disk 100, and includes a laser device and a lens. More specifically, the optical pickup 352 irradiates the optical disc 100 with a light beam such as a laser beam at a first power as a read light during reproduction, and modulates with a second power as a write light at the time of recording. Irradiate.
  • the signal recording / reproducing means 353 performs recording / reproduction with respect to the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352.
  • the memory 355 is used in general data processing in the information recording apparatus 300, such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converted into data used by the signal recording / reproducing means 353.
  • the Memory 355 is composed of a ROM area where programs for operating these recorder devices are stored, a buffer used for compression / decompression of video data, and a RAM area where variables necessary for program operations are stored. Is done.
  • the CPU (drive control means) 354 is a specific example of the “control means” in the present invention, and is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and instructs each control means. To control the information recording apparatus 300 as a whole. Normally, software for operating the CPU 354 is stored in the memory 355.
  • Data input / output control means 356 inputs data to be recorded on optical disc 100 from, for example, an external device. Then, the data input / output unit 356 outputs the input data to the signal recording / reproducing unit 353 via the bus 357. When data recorded on the optical disc 100 can be reproduced, the data input / output means 356 may be configured to output the reproduced data to an external output device such as a liquid crystal display.
  • the OPC pattern generator 359 is used to generate a predetermined OPC pattern as a specific example of "pattern information" in the present invention, using various strategies described later.
  • the LD driver 358 emits a laser diode or the like of the optical pickup 352 at a predetermined frequency. By oscillating, the laser beam emitted from the optical pickup 352 is controlled.
  • data is recorded on the optical disc 100 according to the above-described embodiment.
  • data is recorded in the L1 layer after data is recorded in the LO layer.
  • data can be recorded in the LO layer at any time, but when data is recorded in the L1 layer, the data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which the data is recorded. Record.
  • OPC in the PCA 103 or PCA 113, the optimum recording laser power at the time of data recording can be obtained appropriately and reliably. Therefore, there is an advantage that the recording quality of data can be improved, and the reproduction quality of the recorded data can also be improved.
  • the optical pickup 352 is moved to the PCA 103 or PCA 113 provided in the lead-in area 102 under the control of the CPU 354 as one specific example of the “calculation means” in the present invention, and the OPC pattern generator 359 and the LD driver 358 According to the operation, the recording laser power is switched sequentially step by step (for example, 16 steps different from each other), and the OPC pattern is recorded in the PCA103 or PCA113.
  • a recording pattern in which short pits (marks) corresponding to 2T pulses and long pits (marks) corresponding to 8T pulses are alternately formed with no-recording sections (spaces) of the same length is given as an example. .
  • the waveform of the laser beam that realizes this recording pattern is defined by a predetermined strategy that the information recording apparatus 300 has.
  • the LD driver 358 drives the semiconductor laser in the optical pickup 352 so that the recording laser power is sequentially switched in accordance with the OPC pattern output from the OPC pattern generator 359.
  • the OPC pattern that has been trial-written to the PCA 103 or! Or PCA 113 is reproduced under the control of the CPU 354.
  • the Specifically, the peak value and the bottom value of the envelope detection of the RF signal are sampled from the RF signal input to the envelope detector (not shown).
  • the optimum recording laser power is determined. That is, from the asymmetry obtained from these peak and bottom values, for example For example, the optimum recording laser power is required so that the jitter value representing the quality of the recording characteristics is near the minimum.
  • the information recording apparatus 300 also serves as an embodiment of the information recording / reproducing apparatus. That is, the recorded information can be reproduced via the optical pickup 352 and the signal recording / reproducing means 353 (for example, a head amplifier or an RF detector not shown). Includes functions of information recording / reproducing apparatus.
  • the signal recording / reproducing means 353 for example, a head amplifier or an RF detector not shown.
  • the power described for the optical disc 100 as an example of the information recording medium and the recorder according to the optical disc 100 as an example of the information recording device is not limited to the optical disc and the recorder.
  • the present invention can also be applied to other high-density recording or various information recording media compatible with high transfer rates and their recorders.
  • the present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read.
  • An information recording medium, an information recording apparatus and method, and a computer program for recording control are also included in the technical scope of the present invention.
  • the information recording medium, information recording apparatus and method, and computer program according to the present invention can be used for, for example, a high-density optical disk such as a DVD, and can also be used for an information recording apparatus such as a DVD recorder. . Further, the present invention can be used for an information recording device or the like that is mounted on or can be connected to various computer devices for consumer use or business use, for example.

Abstract

An information recording medium (100) has a first recording layer (L0 layer) for recording information by being irradiated with laser light (LB) and a second recording layer (L1 layer) for recording information by being irradiated with laser light through the first recording layer. The first recording layer includes a pre-recording area (105) where pre-information is recorded in advance. The second recording layer has an area (113) for correction, and the area (113) is at a position irradiated with laser light through the pre-information area. In the area (113) for correction is recorded pattern information for obtaining optimum power of the laser light at the second recording layer.

Description

情報記録媒体、情報記録装置及び方法、並びにコンピュータプログラム 技術分野  Information recording medium, information recording apparatus and method, and computer program
[0001] 本発明は、例えば DVD等の情報記録媒体、 DVDレコーダ等の情報記録装置及 び方法並びにコンピュータをこのような情報記録装置として機能させるコンピュータプ ログラムの技術分野に関する。  The present invention relates to an information recording medium such as a DVD, an information recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such an information recording apparatus.
背景技術  Background art
[0002] 例えば、 CD-ROM (Compact Disc -Read Only Memory)、 CD-R (Compact Dis c Recordable) , DVD— ROMなどの光ディスク等の情報記録媒体では、同一基板 上に複数の記録層が積層されてなる多層型若しくはダブルレイヤ又はマルチプルレ ィャ型の光ディスク等も開発されている。より具体的には、 2層型の光ディスクは、一 層目として、情報記録装置で記録される際のレーザ光の照射側から見て最も手前側 (即ち、光ピックアップに近い側）に位置する第 1記録層（本願では適宜「L0層」と称 する）を有しており、更にその奥側（即ち、光ピックアップ力 遠い側）に位置する半透 過反射膜を有する。 2層目として、該半透過反射膜の奥側に接着層等の中間層を介 して位置する第 2記録層（本願では適宜「L1層」と称する）を有しており、更にその奥 側に位置する反射膜を有する。そして、このような多層型の情報記録媒体を作成する 際には、 L0層と L1層とを別々に形成し、最後に夫々の層を貼り合わせることで、低コ ストに 2層型の光ディスクを製造することができる。  For example, in an information recording medium such as a CD-ROM (Compact Disc-Read Only Memory), a CD-R (Compact Disc Recordable), and a DVD-ROM, a plurality of recording layers are stacked on the same substrate. Multi-layered, double-layer, or multiple-layer optical discs have been developed. More specifically, the two-layer type optical disc is positioned as the first layer on the most front side (that is, the side close to the optical pickup) when viewed from the laser light irradiation side when recording by the information recording apparatus. It has a first recording layer (referred to as “L0 layer” in the present application as appropriate), and further has a semitransparent reflection film located on the back side thereof (that is, on the side far from the optical pickup force). As the second layer, it has a second recording layer (referred to as “L1 layer” in this application as appropriate) located on the back side of the transflective film via an intermediate layer such as an adhesive layer, and further on the back side. A reflective film located on the side; When creating such a multilayer information recording medium, the L0 layer and the L1 layer are formed separately, and finally, the two layers are bonded together, so that the two-layer type optical disk can be manufactured at a low cost. Can be manufactured.
[0003] そして、このような 2層型の光ディスクを記録する、 CDレコーダ等の情報記録装置 では、 L0層に対して記録用のレーザ光魏光 (或いは、照射)することで、 L0層に対 して情報を加熱などによる非可逆変化記録加熱などによる非可逆変化記録方式や 書換え可能方式で記録し、 L1層に対して該レーザ光を集光することで、 L1層に対し て情報を加熱などによる非可逆変化記録加熱などによる非可逆変化記録方式や書 換え可能方式で記録することになる。  [0003] Then, in an information recording apparatus such as a CD recorder that records such a two-layer type optical disc, the L0 layer is irradiated with a laser beam for recording (or irradiated) so that the L0 layer On the other hand, information is recorded by the irreversible change recording method or the rewritable method by heating or the like, and the laser beam is focused on the L1 layer, so that the information is collected on the L1 layer. Recording by irreversible change recording by heating or the like Recording is performed by a irreversible change recording method by heating or by a rewritable method.
[0004] 他方で、光ディスク等の情報記録媒体を記録する情報記録再生装置においては、 光ディスクの種類、情報記録再生装置の種類及び記録速度等に応じて、 OPC (Opti mum Power Calibration)処理により、記録パワーにおける最適パワーが設定される。 即ち、記録パワーのキャリブレーション（較正）が行われる。これにより、光ディスクに おける適切な記録動作を実現できる。例えば、光ディスクが装填されて書き込みのコ マンドが入力されると、順次段階的に光強度が切り換えられて試し書き用のデータが OPCエリア（PCA)に記録され、いわゆる試し書きの処理が実行される。その後、この ようにして記録された試し書き用のデータが再生され、この再生結果が所定の評価基 準により判定されて、最適パワーが設定される (特許文献 1)。また、実際の記録動作 と同時に行う OPC (所謂、ランニング OPC)によっても、最適パワーを設定することが できる。 [0004] On the other hand, in an information recording / reproducing apparatus for recording an information recording medium such as an optical disk, an OPC (Opti) is used depending on the type of optical disk, the type of information recording / reproducing apparatus, the recording speed, and the like. mum Power Calibration) process sets the optimum power for recording power. That is, recording power calibration is performed. As a result, an appropriate recording operation on the optical disc can be realized. For example, when an optical disc is loaded and a write command is input, the light intensity is sequentially switched and the data for trial writing is recorded in the OPC area (PCA), so-called trial writing processing is executed. The Thereafter, the trial writing data recorded in this manner is reproduced, and the reproduction result is determined based on a predetermined evaluation criterion, and the optimum power is set (Patent Document 1). The optimum power can also be set by OPC (so-called running OPC) performed simultaneously with the actual recording operation.
[0005] 特許文献 1 :特許第 3159454号公報  [0005] Patent Document 1: Japanese Patent No. 3159454
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0006] このような 2層型の光ディスクにおいては、夫々の記録層において、内周側又は外 周側で OPCを行う。このとき、レーザ光を照射する側から見て手前側の記録層（例え ば、 L0層）の記録条件は、レーザ光を照射する側から見て奥側の記録層（例えば、 L 1層）の状態 (例えば、データが記録済であるか或いは未記録である力）に左右される 。同様に、レーザ光を照射する側から見て奥側の記録層（例えば、 L1層）の記録条 件は、レーザ光を照射する側から見て手前側の記録層（例えば、 L0層）の状態に左 右される。従って、 2層型の光ディスクにおいて OPCを行なうには、このような記録条 件の相違を考慮する必要がある。し力しながら、上述した背景技術における OPCに よれば、このような記録条件の相違を考慮せず、夫々の記録層に設けられた OPCェ リアにおいて行なっている。このため、 2層型の光ディスクの夫々の記録層にとって、 真に最適な記録パワーを求めることは困難或いは不可能であるという技術的な問題 点を有している。 [0006] In such a two-layer type optical disc, OPC is performed on the inner circumference side or the outer circumference side in each recording layer. At this time, the recording condition of the recording layer on the front side (for example, L0 layer) when viewed from the laser light irradiation side is the recording layer on the back side (for example, L1 layer) when viewed from the laser light irradiation side. Depending on the state of the data (for example, the force with which the data is recorded or not recorded). Similarly, the recording condition of the recording layer on the back side (for example, L1 layer) when viewed from the laser light irradiation side is the same as that of the recording layer (for example, L0 layer) on the near side when viewed from the laser light irradiation side. Left and right to the state. Therefore, in order to perform OPC on a two-layer type optical disc, it is necessary to consider such a difference in recording conditions. However, according to the OPC in the background art described above, it is performed in the OPC area provided in each recording layer without considering such a difference in recording conditions. Therefore, there is a technical problem that it is difficult or impossible to obtain a truly optimum recording power for each recording layer of the two-layer type optical disc.
[0007] 特に、現状の 2層型の光ディスクの大多数力 手前側の記録層にデータを記録した 後に奥側の記録層にデータを記録している力 上述した背景技術における OPCはこ のような記録条件を考慮して 、な 、と 、う技術的な問題点を有して 、る。  [0007] In particular, the majority of the current two-layer type optical disc is the force that records data on the recording layer on the front side after data is recorded on the recording layer on the front side. Considering various recording conditions, there are technical problems.
[0008] 本発明は、例えば上述した従来の問題点に鑑みなされたものであり、例えば複数 の記録層を有する情報記録媒体であっても、適切に記録パワーのキャリブレーション を行なうことを可能とならしめる情報記録媒体、情報記録装置及び方法、並びにコン ピュータプログラムを提供することを課題とする。 [0008] The present invention has been made in view of, for example, the above-described conventional problems. It is an object of the present invention to provide an information recording medium, an information recording apparatus and method, and a computer program that enable appropriate recording power calibration even with an information recording medium having a plurality of recording layers. .
課題を解決するための手段  Means for solving the problem
[0009] 本発明の情報記録媒体は上記課題を解決するために、レーザ光を照射して記録 情報を記録するための第 1記録層と、前記第 1記録層を介して前記レーザ光を照射 することで前記記録情報を記録するための第 2記録層とを備えており、前記第 1記録 層は、予めプリ情報が記録されたプリ記録エリアを有しており、前記第 2記録層は、前 記プリ記録エリアを介して前記レーザ光が照射される位置に、前記第 2記録層におけ る前記レーザ光の最適パワーを求めるためのパターン情報を記録するための較正用 エリアを有している。  In order to solve the above problems, the information recording medium of the present invention irradiates a laser beam through the first recording layer for recording the recording information by irradiating the laser beam, and the first recording layer. A second recording layer for recording the recording information, wherein the first recording layer has a pre-recording area in which pre-information is recorded in advance, and the second recording layer is A calibration area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer at a position irradiated with the laser beam through the pre-recording area. ing.
[0010] 本発明の情報記録媒体によれば、複数の記録層（即ち、第 1記録層及び第 2記録 層）の夫々において各種記録情報を記録することが可能である。係る複数の記録層 は、例えば基板の一方の面上に積層構造に形成されていてもよい。  [0010] According to the information recording medium of the present invention, various types of recording information can be recorded in each of a plurality of recording layers (that is, the first recording layer and the second recording layer). The plurality of recording layers may be formed in a laminated structure on one surface of the substrate, for example.
[0011] 本発明では特に、レーザ光を照射する側から見て手前側（或いは、近い側）にある 第 1記録層には予めプリ情報が記録されたプリ記録エリアを含んでいる。そして、この プリ記録エリアに対応する L1層の記録領域 (即ち、プリ記録エリアを介してレーザ光 が照射される記録領域）において較正用エリアが設けられている。この較正用エリア は、第 2記録層におけるレーザ光の最適パワーを求めるためのパターン情報を記録 するための記録領域である。ここに、本発明における「最適パワー」とは、文字通り最 も適した記録パワーを示すことに限らず、記録時においてより適切に記録情報を記録 することができる程度の記録パワーをも含んだ広い趣旨である。このため、本発明に 係る情報記録媒体において、第 2記録層における最適パワーを求める場合には、プ リ記録エリアを介して較正用エリアにレーザ光を照射してパターン情報を記録する。 このため、ここで求められる最適パワーは、記録情報が記録済である第 1記録層の記 録領域に対応する第 2記録層に記録情報を記録する際の最適パワーとなる。  In the present invention, in particular, the first recording layer on the front side (or the near side) when viewed from the laser beam irradiation side includes a pre-recording area in which pre-information is recorded in advance. A calibration area is provided in the recording area of the L1 layer corresponding to the pre-recording area (that is, the recording area irradiated with laser light through the pre-recording area). This calibration area is a recording area for recording pattern information for obtaining the optimum power of the laser beam in the second recording layer. Here, the “optimum power” in the present invention is not limited to literally the most suitable recording power, but includes a wide range of recording power that can record information more appropriately during recording. It is the purpose. For this reason, in the information recording medium according to the present invention, when obtaining the optimum power in the second recording layer, pattern information is recorded by irradiating the calibration area with laser light through the pre-recording area. For this reason, the optimum power required here is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded.
[0012] 仮に、プリ記録エリアが設けられてなければ、較正用エリアに対応する第 1記録層 の記録領域に記録情報が記録されている力否かは定かではない。従って、この較正 用エリアにパターン情報を記録することで求められる最適パワーは、記録情報が記録 済である第 1記録層の記録領域に対応する第 2記録層に記録情報を記録する際の 最適パワーであるか、或 1、は記録情報が未記録である第 1記録層の記録領域に対 応する第 2記録層に記録情報を記録する際の最適パワーであるか定かではな!/、点で 好ましくない。しかるに本発明によれば、較正用エリアに対応する第 1記録層の記録 領域にはプリ情報が記録されている。従って、ここで求められる最適パワーは、記録 情報が記録済である第 1記録層の記録領域に対応する第 2記録層に記録情報を記 録する際の最適パワーであると明確に認識できる。即ち、第 2記録層における較正用 エリアに対応して、プリ情報が記録されたプリ記録エリアが第 1記録層に設けられてい ると!/ヽぅ点で、本発明に係る情報記録媒体は優れた利点を有して 、ると 、える。 [0012] If the pre-recording area is not provided, it is not certain whether the recording information is recorded in the recording area of the first recording layer corresponding to the calibration area. Therefore, this calibration The optimum power required by recording the pattern information in the recording area is the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded. However, it is unclear whether the recording power is the optimum power when recording information is recorded on the second recording layer corresponding to the recording area of the first recording layer where the recording information is not recorded. . However, according to the present invention, the pre-information is recorded in the recording area of the first recording layer corresponding to the calibration area. Therefore, the optimum power required here can be clearly recognized as the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded. That is, if the pre-recording area in which the pre-information is recorded is provided in the first recording layer corresponding to the calibration area in the second recording layer, the information recording medium according to the present invention is It has a great advantage.
[0013] 以上の結果、本発明の情報記録媒体によれば、複数の記録層を有する情報記録 媒体であっても、適切に記録パワーのキャリブレーションを行なうことができる（即ち、 最適パワーを求めることができる）という大きな利点を有する。特に、記録情報が記録 済である第 1記録層の記録領域に対応する第 2記録層に記録情報を記録する際の 最適パワーを適切に求めることができる。  As a result of the above, according to the information recording medium of the present invention, even if the information recording medium has a plurality of recording layers, the recording power can be appropriately calibrated (that is, the optimum power is obtained). Can have a great advantage. In particular, the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
[0014] 本発明の情報記録媒体の一の態様では、前記プリ情報は、前記プリ記録エリアへ の前記レーザ光の照射によって記録された情報を含んでなる。  In one aspect of the information recording medium of the present invention, the pre-information includes information recorded by irradiating the pre-recording area with the laser beam.
[0015] この態様によれば、レーザ光の照射によって、比較的容易に且つ適切にプリ情報を 予め記録することができる。カロえて、情報記録媒体の製造後であっても、情報記録装 置によりプリ情報エリアにレーザ光を照射することで、比較的容易にプリ情報を記録 することができる。  [0015] According to this aspect, the pre-information can be recorded in advance relatively easily and appropriately by irradiation with laser light. Even after the information recording medium is manufactured, the pre-information can be recorded relatively easily by irradiating the pre-information area with the laser light by the information recording device.
[0016] 本発明の情報記録媒体の他の態様では、前記プリ情報は、予め形成されたェンボ スピットによって記録された情報を含んでなる。  In another aspect of the information recording medium of the present invention, the pre-information includes information recorded by a previously formed emboss pit.
[0017] この態様によれば、情報記録媒体の製造時に予め形成されるエンボスピットにより、 比較的容易に且つ適切にプリ情報を記録することが可能となる。 [0017] According to this aspect, the pre-information can be recorded relatively easily and appropriately by the embossed pits formed in advance when the information recording medium is manufactured.
[0018] 本発明の情報記録媒体の他の態様では、前記プリ記録エリアは、前記較正用エリ ァよりも大きい。 [0018] In another aspect of the information recording medium of the present invention, the pre-recording area is larger than the calibration area.
[0019] この態様によれば、プリ記録エリアと較正用エリアとが厳密な意味での対応付けが なされていなくとも、或いは若干の位置的なズレを有していたとしても、プリ記録エリア を介して較正用エリアに適切にレーザ光を照射することが可能となる。 [0019] According to this aspect, the pre-recording area and the calibration area are associated in a strict sense. Even if it is not made, or even if there is a slight positional deviation, it is possible to appropriately irradiate the laser beam to the calibration area through the pre-recording area.
[0020] 上述の如くプリ記録エリアが較正用エリアよりも大きい情報記録媒体の態様では、 前記プリ記録エリアは、前記第 1記録層と前記第 2記録層との偏心の大きさに相当す る領域だけ前記較正用エリアより大き!/、ように構成してもよ!/、。  [0020] As described above, in the aspect of the information recording medium in which the pre-recording area is larger than the calibration area, the pre-recording area corresponds to the eccentricity between the first recording layer and the second recording layer. Only the area may be configured to be larger than the calibration area! /!
[0021] このように構成すれば、 2層型の情報記録媒体において見られる貼り合わせによる 偏心やその他の偏心等の悪影響を排除することができ、その結果、プリ記録エリアを 介して較正用エリアに適切にレーザ光を照射することが可能となる。  [0021] With this configuration, it is possible to eliminate the adverse effects such as eccentricity and other eccentricity caused by bonding, which are seen in a two-layer type information recording medium, and as a result, the calibration area is connected via the pre-recording area. It is possible to irradiate the laser beam appropriately.
[0022] 本発明の情報記録装置は上記課題を解決するために、上述した本発明の情報記 録媒体 (但し、その各種態様を含む）に前記記録情報を記録可能な記録手段と、前 記プリ記録エリアを介して前記較正用エリアに前記レーザ光を照射して前記パターン 情報を記録するように前記記録手段を制御し、前記第 2記録層における前記レーザ 光の最適パワーを求める算出手段と、該求められた最適パワーで前記レーザ光を照 射して前記記録情報を前記第 2記録層へ記録するように前記記録手段を制御する制 御手段とを備える。  In order to solve the above problems, an information recording apparatus of the present invention includes a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof), Calculating means for controlling the recording means so as to record the pattern information by irradiating the laser beam to the calibration area via a pre-recording area, and obtaining an optimum power of the laser light in the second recording layer; And a control means for controlling the recording means so as to record the recording information on the second recording layer by irradiating the laser beam with the determined optimum power.
[0023] 本発明の情報記録装置によれば、算出手段の動作により最適パワー (特に、第 2記 録層における最適パワー）が求められる。そして、制御手段の動作により、最適パヮ 一でレーザ光を照射するように記録手段が制御される。その結果、記録手段の動作 により、適切な記録パワーで記録情報を記録することができる。特に、算出手段により 、プリ記録エリアを介して較正用エリアにレーザ光を照射することでパターン情報が 記録されるため、上述した本発明の情報記録媒体が有する各種利益を享受すること が可能となる。  [0023] According to the information recording apparatus of the present invention, the optimum power (particularly, the optimum power in the second recording layer) is obtained by the operation of the calculating means. Then, by the operation of the control means, the recording means is controlled so as to irradiate the laser beam at the optimum level. As a result, the recording information can be recorded with an appropriate recording power by the operation of the recording means. In particular, since the pattern information is recorded by irradiating the calibration area with the laser light through the pre-recording area by the calculating means, it is possible to enjoy various benefits of the information recording medium of the present invention described above. Become.
[0024] 尚、上述した本発明の情報記録媒体における各種態様に対応して、本発明の情報 記録装置も各種態様を採ることが可能である。  [0024] Incidentally, in response to the various aspects of the information recording medium of the present invention described above, the information recording apparatus of the present invention can also adopt various aspects.
[0025] 本発明の情報記録装置の一の態様では、前記制御手段は、前記第 1記録層へ前 記記録情報を記録した後に、前記第 2記録層へ前記記録情報を記録するように前記 記録手段を制御する。 In one aspect of the information recording apparatus of the present invention, the control means records the recording information on the second recording layer after recording the recording information on the first recording layer. Control the recording means.
[0026] この態様によれば、第 1記録層が記録された後に第 2記録層へ記録情報が記録さ れるため、算出手段により求められた最適パワーに適合した記録条件で記録情報を 記録することができる。即ち、最適パワーが求められた場合と同じ記録条件で第 2記 録層に記録情報を記録することができる。このため、記録情報の記録特性の向上を 図ることができる。 [0026] According to this aspect, the recording information is recorded on the second recording layer after the first recording layer is recorded. Therefore, it is possible to record the recording information under the recording condition that matches the optimum power obtained by the calculating means. That is, the recording information can be recorded on the second recording layer under the same recording conditions as when the optimum power is obtained. For this reason, it is possible to improve the recording characteristics of the recorded information.
[0027] 本発明の情報記録方法は上記課題を解決するために、上述した本発明の情報記 録媒体 (但し、その各種態様を含む）に前記記録情報を記録可能な記録手段を備え る情報記録装置における情報記録方法であって、前記プリ記録エリアを介して前記 較正用エリアに前記レーザ光を照射して前記パターン情報を記録するように前記記 録手段を制御し、前記第 2記録層における前記レーザ光の最適パワーを求める算出 工程と、該求められた最適パワーで前記レーザ光を照射して前記記録情報を前記第 2記録層へ記録するように前記記録手段を制御する制御工程とを備える。  In order to solve the above problems, the information recording method of the present invention is an information provided with a recording means capable of recording the recording information on the above-described information recording medium of the present invention (including various aspects thereof). An information recording method in a recording apparatus, wherein the recording means is controlled to record the pattern information by irradiating the calibration area with the laser light through the pre-recording area, and the second recording layer A calculation step for obtaining an optimum power of the laser beam in the step, and a control step for controlling the recording means to record the recording information on the second recording layer by irradiating the laser beam with the obtained optimum power. Is provided.
[0028] 本発明の情報記録方法によれば、上述した本発明の情報記録装置と同様に、算出 工程において最適パワーが求められ、制御工程において該求められた最適パワー でレーザ光を照射して記録情報を記録するように記録手段が制御される。従って、上 述した本発明の情報記録装置が有する各種利益を享受することができる。  [0028] According to the information recording method of the present invention, as in the information recording apparatus of the present invention described above, the optimum power is obtained in the calculation step, and the laser light is irradiated with the obtained optimum power in the control step. The recording means is controlled to record the record information. Accordingly, various benefits of the information recording apparatus of the present invention described above can be enjoyed.
[0029] 尚、上述した本発明の情報記録装置における各種態様に対応して、本発明の情報 記録方法も各種態様を採ることが可能である。  [0029] Incidentally, in response to the various aspects of the information recording apparatus of the present invention described above, the information recording method of the present invention can also adopt various aspects.
[0030] 本発明に係るコンピュータプログラムは上記課題を解決するために、コンピュータを 上述した情報記録装置 (但し、その各種形態も含む)として機能させる。より具体的に は、コンピュータを上述した情報記録装置における記録手段、算出手段及び制御手 段の少なくとも一部として機能させる。  [0030] In order to solve the above problems, a computer program according to the present invention causes a computer to function as the above-described information recording device (including various forms thereof). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
[0031] 本発明に係るコンピュータプログラムによれば、当該コンピュータプログラムを格納 する ROM、 CD-ROM, DVD-ROM,ハードディスク等の記録媒体から、当該コ ンピュータプログラムをコンピュータに読み込んで実行させれば、或いは、当該コンビ ユータプログラムを、通信手段を介してコンピュータにダウンロードさせた後に実行さ せれば、上述した本発明の情報記録装置を比較的簡単に実現できる。  [0031] According to the computer program of the present invention, if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Alternatively, if the computer program is downloaded to a computer via communication means and then executed, the above-described information recording apparatus of the present invention can be realized relatively easily.
[0032] 尚、上述した本発明の情報記録装置における各種態様に対応して、本発明のコン ピュータプログラムも各種態様を採ることが可能である。 [0033] コンピュータ読取可能な媒体内のコンピュータプログラム製品は上記課題を解決す るために、コンピュータにより実行可會なプログラム命令を明白に具現ィ匕し、該コンビ ユータを、上述した情報記録装置 (但し、その各種形態も含む）として機能させる。より 具体的には、コンピュータを上述した情報記録装置における記録手段、算出手段及 び制御手段の少なくとも一部として機能させる。 Incidentally, in response to the various aspects of the information recording apparatus of the present invention described above, the computer program of the present invention can also adopt various aspects. [0033] In order to solve the above problems, a computer program product in a computer-readable medium clearly embodies a program command executable by a computer, and the computer is connected to the above-described information recording apparatus ( (However, various forms thereof are also included). More specifically, the computer is caused to function as at least a part of the recording means, calculation means, and control means in the information recording apparatus described above.
[0034] 本発明のコンピュータプログラム製品によれば、当該コンピュータプログラム製品を 格納する ROM、 CD-ROM, DVD-ROM,ハードディスク等の記録媒体から、当 該コンピュータプログラム製品をコンピュータに読み込めば、或いは、例えば伝送波 である当該コンピュータプログラム製品を、通信手段を介してコンピュータにダウン口 ードすれば、上述した本発明の情報記録装置を比較的容易に実施可能となる。更に 具体的には、当該コンピュータプログラム製品は、上述した本発明の情報記録装置と して機能させるコンピュータ読取可能なコード (或いはコンピュータ読取可能な命令） 力 構成されてよい。  [0034] According to the computer program product of the present invention, if the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or For example, if the computer program product, which is a transmission wave, is downloaded to a computer via communication means, the information recording apparatus of the present invention described above can be implemented relatively easily. More specifically, the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
[0035] 本発明のこのような作用及び他の利得は次に説明する実施例から明らかにされる。  [0035] These effects and other advantages of the present invention will become apparent from the embodiments described below.
[0036] 以上説明したように、本発明の情報記録媒体によれば、第 1記録層と第 2記録層と を備えており、第 1記録層はプリ記録エリアを含んでおり、第 2記録層は較正用エリア を含んでいる。従って、複数の記録層を有する情報記録媒体であっても、適切に記 録パワーのキャリブレーションを行なうことができるという大きな利点を有する。特に、 記録情報が記録済である第 1記録層の記録領域に対応する第 2記録層に記録情報 を記録する際の最適パワーを適切に求めることができる。 As described above, according to the information recording medium of the present invention, the first recording layer and the second recording layer are provided, the first recording layer includes the pre-recording area, and the second recording layer The layer contains a calibration area. Therefore, even an information recording medium having a plurality of recording layers has a great advantage that the recording power can be appropriately calibrated. In particular, the optimum power for recording the recording information on the second recording layer corresponding to the recording area of the first recording layer on which the recording information has been recorded can be obtained appropriately.
[0037] また、本発明の情報記録装置又は方法によれば、記録手段、算出手段及び制御 手段、又は算出工程及び制御工程を備える。従って、上述した本発明に係る情報記 録媒体が有する各種利益を享受することができる。 [0037] Further, according to the information recording apparatus or method of the present invention, a recording means, a calculation means and a control means, or a calculation step and a control step are provided. Therefore, various benefits of the information recording medium according to the present invention described above can be enjoyed.
図面の簡単な説明  Brief Description of Drawings
[0038] [図 1]本発明の情報記録媒体の実施例に係る複数の記録領域を有する光ディスクの 基本構造を示した概略平面図であり、該光ディスクの概略断面図と、これに対応付け られた、その半径方向における記録領域構造の図式的概念図である。  FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and is associated with a schematic cross-sectional view of the optical disc. It is a schematic conceptual diagram of a recording area structure in the radial direction.
[図 2]本実施例に係る情報記録媒体のデータ構造の例を概念的に示すデータ構造 図である。 FIG. 2 is a data structure conceptually showing an example of the data structure of the information recording medium according to the embodiment. FIG.
[図 3]本実施例に係る情報記録媒体のデータ構造のより詳細な例を概念的に示すデ ータ構造図である。  FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium in the embodiment.
[図 4]本実施例に係る情報記録媒体の比較例に係る情報記録媒体のデータ構造の 例を概念的に示すデータ構造図である。  FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium in the comparative example of the information recording medium in the example.
[図 5]本実施例における情報記録媒体にデータを記録する条件を示す表である。  FIG. 5 is a table showing conditions for recording data on the information recording medium in the present embodiment.
[図 6]本発明の情報記録媒体に係る実施例の第 1変形例に係る情報記録媒体のデ ータ構造を概念的に示すデータ構造図である。 FIG. 6 is a data structure diagram conceptually showing a data structure of an information recording medium according to a first modification of the embodiment of the information recording medium of the present invention.
[図 7]本発明の情報記録媒体に係る実施例の第 2変形例に係る情報記録媒体のデ ータ構造を概念的に示すデータ構造図である。  FIG. 7 is a data structure diagram conceptually showing a data structure of an information recording medium according to a second modification of the embodiment of the information recording medium of the present invention.
[図 8]本発明の情報記録装置に係る実施例の基本構造を概念的に示すブロック図で ある。  FIG. 8 is a block diagram conceptually showing the basic structure of the example of the information recording apparatus of the present invention.
符号の説明 Explanation of symbols
1 情報記録装置 1 Information recording device
100、 100a, 100b 光ディスク  100, 100a, 100b optical disc
102、 112 リード、インエリア  102, 112 Lead, In-area
103、 113 PCA  103, 113 PCA
105 プリ記録エリア（コントロールデータゾーン)  105 Pre-record area (control data zone)
116 マージンエリア  116 Margin area
108、 118 リードアウトエリア  108, 118 Lead-out area
109、 119 ミドノレエリア  109, 119 Midori area
300 情報記録装置  300 Information recording device
352 光ピックアップ  352 optical pickup
354 CPU  354 CPU
355 メモリ  355 memory
358 LDド、ライノ  358 LD, Rhino
359 OPCパターン発生器  359 OPC pattern generator
発明を実施するための最良の形態 [0040] 以下、本発明を実施するための最良の形態について実施例毎に順に図面に基づ いて説明する。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described in each embodiment in order with reference to the drawings.
[0041] 以下、本発明の実施例を図面に基づいて説明する。  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0042] (情報記録媒体の実施例） [Example of information recording medium]
先ず、図 1から図 7を参照して、本発明の情報記録媒体に係る実施例について説 明を進める。  First, with reference to FIG. 1 to FIG. 7, description will be given on an embodiment of the information recording medium of the present invention.
[0043] 先ず図 1を参照して、本発明の情報記録媒体の実施例に係る光ディスクの基本構 造について説明する。ここに、図 1 (a)は、本発明の情報記録媒体の実施例に係る複 数の記録領域を有する光ディスクの基本構造を示した概略平面図であり、図 1 (b)は 、該光ディスクの概略断面図と、これに対応付けられた、その半径方向における記録 領域構造の図式的概念図である。  First, with reference to FIG. 1, the basic structure of an optical disc according to an embodiment of the information recording medium of the present invention will be described. Here, FIG. 1 (a) is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention, and FIG. FIG. 2 is a schematic cross-sectional view of FIG. 2 and a schematic conceptual diagram of a recording area structure in the radial direction associated therewith.
[0044] 図 1 (a)及び図 1 (b)に示されるように、光ディスク 100は、例えば、 DVDと同じく直 径 12cm程度のディスク本体上の記録面に、センターホール 101を中心として本実施 例に係るリードインエリア 102、データ記録エリア 107並びにリードアウトエリア 108又 はミドルエリア 109が設けられている。そして、光ディスク 100の例えば、透明基板 20 0に、記録層等が積層されている。そして、この記録層の各記録領域には、例えば、 センターホール 101を中心にスパイラル状或いは同心円状に、例えば、グループトラ ック及びランドトラック等のトラックが交互に設けられている。また、このトラック上には、 データが ECCブロックという単位で分割されて記録される。 ECCブロックは、記録情 報がエラー訂正可能なプリフォーマットアドレスによるデータ管理単位である。  [0044] As shown in Fig. 1 (a) and Fig. 1 (b), the optical disc 100 is implemented in the recording surface on the disc main body having a diameter of about 12 cm as in the DVD, with the center hole 101 as the center. The lead-in area 102, the data recording area 107 and the lead-out area 108 or the middle area 109 according to the example are provided. A recording layer or the like is laminated on the transparent substrate 200 of the optical disc 100, for example. In each recording area of the recording layer, for example, tracks such as a group track and a land track are alternately provided in a spiral shape or a concentric shape around the center hole 101. On this track, data is divided and recorded in units of ECC blocks. The ECC block is a data management unit based on preformat addresses that can correct errors in recorded information.
[0045] 尚、本発明は、このような三つのエリアを有する光ディスクには特に限定されない。  Note that the present invention is not particularly limited to an optical disc having such three areas.
例えば、リードインエリア 102、リードアウトエリア 108又はミドルエリア 109が存在せず とも、以下に説明するデータ構造等の構築は可能である。また、後述するように、リー ドインエリア 102、リードアウトエリア 108又はミドルエリア 109は更に細分ィ匕された構 成であってもよい。  For example, even if the lead-in area 102, the lead-out area 108, or the middle area 109 does not exist, the data structure described below can be constructed. Further, as will be described later, the lead-in area 102, the lead-out area 108, or the middle area 109 may be further subdivided.
[0046] 特に、本実施例に係る光ディスク 100は、図 1 (b)に示されるように、例えば、透明 基板に、後述される本発明に係る第 1及び第 2記録層の一例を構成する LO層及び L 1層が積層された構造をしている。このような 2層型の光ディスク 100の記録再生時に は、図 1 (b)中、上側から下側に向力つて照射されるレーザ光 LBの集光位置をいず れの記録層に合わせるかに応じて、 LO層における記録再生が行なわれるか又は L1 層における記録再生が行われる。そして、特に、本実施例では、 LO層に記録がなさ れた後に L1層に記録が行なわれる構成を採用して！/ヽる。 In particular, the optical disc 100 according to the present embodiment constitutes an example of first and second recording layers according to the present invention to be described later, for example, on a transparent substrate, as shown in FIG. 1 (b). The LO layer and L1 layer are stacked. When recording and playing back such a two-layer optical disc 100 In Fig. 1 (b), whether the recording / reproducing is performed in the LO layer depending on which recording layer the focusing position of the laser beam LB irradiated from the upper side to the lower side is applied to. Or recording / reproduction is performed in the L1 layer. In particular, this embodiment employs a configuration in which recording is performed on the L1 layer after recording is performed on the LO layer! / Speak.
[0047] また、本実施例に係る光ディスク 100は、 2層片面、即ち、デュアルレイヤーに限定 されるものではなぐ 2層両面、即ちデュアルレイヤーダブルサイドであってもよい。更 に、上述の如く 2層の記録層を有する光ディスクに限られることなぐ 3層以上の多層 型の光ディスクであってもよ 、。 Further, the optical disc 100 according to the present embodiment is not limited to the two-layer single side, that is, the dual layer, but may be the two-layer double side, that is, the dual layer double side. Furthermore, it is not limited to an optical disc having two recording layers as described above, but may be a multilayer type optical disc having three or more layers.
[0048] 尚、 2層型光ディスクにおけるォポジットトラックパス方式及びパラレルトラックパス方 式による記録再生手順及び各層におけるデータ構造にっ 、ては、後述される。 [0048] Note that the recording / reproduction procedure by the opposite track path method and the parallel track path method in the two-layer type optical disc and the data structure in each layer will be described later.
[0049] 続いて、図 2から図 5を参照して、本実施例に係る情報記録媒体についてのデータ 構造をより詳細に説明する。 [0049] Next, the data structure of the information recording medium according to the present embodiment will be described in more detail with reference to FIGS.
[0050] 先ず、図 2を参照して、本実施例に係る情報記録媒体のデータ構造の概略を説明 する。 [0050] First, an outline of the data structure of the information recording medium according to the present embodiment will be described with reference to FIG.
ここに、図 2は、本実施例に係る情報記録媒体のデータ構造の例を概念的に示すデ ータ構造図である。  FIG. 2 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the present embodiment.
[0051] 図 2に示すように、光ディスク 100の LO層には、 PCA (Power Calibration Area) 103 、記録管理情報ゾーン（Recording Management Area) 104、リードインエリア 102、図 示しないデータ記録エリア 107及び図示しないミドルエリア 109が設けられている。ま た、 L1層には、リザーブドエリア（Reserved Area)、リードアウトエリア 118、図示しな いデータ記録エリア 117及び図示しないミドルエリア 119が設けられている。即ち、光 ディスク 100はォポジットトラックパス方式の光ディスクである。  As shown in FIG. 2, the LO layer of the optical disc 100 includes a PCA (Power Calibration Area) 103, a recording management information zone (Recording Management Area) 104, a lead-in area 102, a data recording area 107 (not shown), and A middle area 109 (not shown) is provided. The L1 layer includes a reserved area, a lead-out area 118, a data recording area 117 (not shown), and a middle area 119 (not shown). That is, the optical disc 100 is an opposite track path type optical disc.
[0052] PCA103は、最適な記録レーザパワーを求めるための（即ち、記録レーザパワーの キャリブレーション）処理に用いられる領域である。特に、 PCA103は、 L0層の最適 な記録レーザパワーを求めるために用いられる。ここでの「最適な」とは、文字通り最 も適した場合のみならず、適切にデータを記録することが可能な程度をも含んだ広 ヽ 趣旨である。より好ましくは、例えば後述するようにァシンメトリの影響が記録動作に 影響を与えない程度であったり、或いは記録されたデータの再生エラーレートや再生 ジッタ値力^或いは概ね記録動作に影響を与えな 、程度に低!、状態を実現できる程 度であることが好ましい。例えば、本発明における「パターン情報」の一具体例たる O PCパターンの試し書きの完了後には、試し書きされた OPCパターンが再生され、再 生された OPCパターンのサンプリングが順次行われて、最適な記録レーザパワーが 求められる。尚、 OPC動作については、後に詳述する。 [0052] The PCA 103 is an area used for processing for obtaining an optimum recording laser power (that is, calibration of the recording laser power). In particular, the PCA 103 is used for obtaining the optimum recording laser power of the L0 layer. Here, “optimal” is not only the case where it is literally the most suitable, but also a broad meaning including the extent to which data can be recorded appropriately. More preferably, for example, as will be described later, the influence of asymmetry does not affect the recording operation, or the playback error rate and playback of recorded data. It is preferable that the jitter value power is low enough to substantially realize the state without affecting the recording operation. For example, after completion of the OPC pattern trial writing as one specific example of the “pattern information” in the present invention, the trial-written OPC pattern is reproduced, and the reproduced OPC pattern is sequentially sampled to obtain the optimum Recording laser power is required. The OPC operation will be described in detail later.
[0053] 記録管理情報ゾーン 104は、当該光ディスク 100へのデータの記録を制御するた めの各種制御情報 (例えば、ディスクステータスや記録ストラテジ情報や OPCにより 求められた最適な記録レーザパワーの値等）が記録されて 、る。  [0053] The recording management information zone 104 includes various control information for controlling the recording of data on the optical disc 100 (for example, the disc status, recording strategy information, the optimum recording laser power value obtained by OPC, etc. ) Is recorded.
[0054] リードインエリア 102及びリードアウトエリア 118は更に細分ィ匕されている。具体的に は、リードインエリア 102は、イニシャルゾーン（Initial Zone)等の各種ゾーン（エリア） 、プリ記録エリア 105及び特別ボーダーゾーン（Extra Border Zone)を含んでいる。リ ードアウトエリア 118は、例えば" 00h"データ等のその他のデータが記録されるエリア 、マージンエリア 116及び PCA113を含んでいる。イニシャルゾーン等の具体的な構 成については、後に詳述する（図 4参照)。  The lead-in area 102 and the lead-out area 118 are further subdivided. Specifically, the lead-in area 102 includes various zones (area) such as an initial zone, a pre-recording area 105, and a special border zone (Extra Border Zone). The lead-out area 118 includes an area in which other data such as “00h” data is recorded, a margin area 116, and a PCA 113. The specific structure of the initial zone will be described in detail later (see Figure 4).
[0055] 特別ボーダーゾーンは、 32ECCブロックの大きさを有しており、リードインエリア 10 2とデータ記録エリア 107との境界部分に設けられる。  The special border zone has a size of 32 ECC blocks and is provided at the boundary between the lead-in area 102 and the data recording area 107.
[0056] 本実施例では特に、リードインエリア 102内にプリ記録エリア 105が設けられている 。このプリ記録エリア 105には、本発明における「プリ情報」の一具体例たる予め所定 のデータ (例えば、 "00h"データ等や或いはそれ以外の任意のデータ）が記録され ている。例えば、当該光ディスク 100の製造時に予め記録されていてもよい。或いは 、光ディスク 100が情報記録装置に初めてローデイングされるときに、当該情報記録 装置によって所定のデータが記録されるように構成してもよい。そして、所定のデータ は、例えばレーザ光 LBの照射によって形成される記録マークや記録ピットの態様で 記録されていてもよいし、或いは、スタンパ等によって形成されるエンボスピットの態 様で記録されて 、てもよ 、。  In this embodiment, in particular, a pre-record area 105 is provided in the lead-in area 102. In this pre-recording area 105, predetermined data (for example, “00h” data or other arbitrary data) as a specific example of “pre-information” in the present invention is recorded. For example, it may be recorded in advance when the optical disc 100 is manufactured. Alternatively, when the optical disk 100 is loaded for the first time on the information recording apparatus, predetermined information may be recorded by the information recording apparatus. The predetermined data may be recorded in the form of recording marks and recording pits formed by, for example, laser beam LB irradiation, or may be recorded in the form of embossed pits formed by a stamper or the like. .
[0057] そして、プリ記録エリア 105に対応する L1層の記録領域には、本発明における「較 正用エリア」の一具体例たる PCA113が設けられている。この PCA113も、上述した PCA103と同様に、 L1層における最適な記録レーザパワーを求めるために用いられ る。 [0057] The recording area of the L1 layer corresponding to the pre-recording area 105 is provided with a PCA 113 as a specific example of the "calibration area" in the present invention. This PCA113 is also used to determine the optimum recording laser power in the L1 layer, similar to the PCA103 described above. The
[0058] そして、プリ記録エリア 105に対応する L1層には、 PCA113を挟む形で、マージン エリア 116が設けられている。このマージンエリア 116は、 LO層と L1層との偏心（例え ば、貼り合わせ誤差による偏心や光ディスクの回転中心点のズレによる偏心等）の大 きさに相当する大きさを有している。そして、マージンエリア 116と PCA113とを含め た L1層における記録領域の大きさ力 LO層におけるプリ記録エリア 105の大きさと 同一であることが好ましい。言い換えれば、プリ記録エリア 105は、 L1層において OP Cを行なうために必要な記録領域 (即ち、 PCA113)と、その両端部分に偏心の大き さに相当するマージンエリア 116をカ卩えた大きさとなるように、予め所定のデータが記 録されて!/、ることが好まし!/、。  In the L1 layer corresponding to the pre-recording area 105, a margin area 116 is provided so as to sandwich the PCA 113. The margin area 116 has a size corresponding to the magnitude of the eccentricity between the LO layer and the L1 layer (for example, the eccentricity due to the bonding error or the eccentricity due to the deviation of the rotation center point of the optical disk). The size of the recording area in the L1 layer including the margin area 116 and the PCA 113 is preferably the same as the size of the pre-recording area 105 in the LO layer. In other words, the pre-recording area 105 has a recording area necessary for OPC in the L1 layer (that is, PCA113) and margin areas 116 corresponding to the eccentricity at both ends thereof. Like, it is preferable that the predetermined data is recorded in advance! / ,!
[0059] より具体的に説明すると、例えば、 OPCに必要なエリア力 光ディスク 100の径方 向に 0. 3mm必要であり、且つ LO層と L1層との偏心が 0. 03mmであるとした場合、 プリ記録エリア 105は、径方向に 0. 3 + 0. 03 X 2 = 0. 36mmの大きさを有している ことが好ましい。但し、偏心は、光ディスク 100の製造時等に予め認識できる物理量 ではない。このため、例えば光ディスク 100が DVDであれば、規格上許容されている 最大偏心量である" 0. 07mm"を偏心の大きさとみなし、 0. 3 + 0. 07 X 2 = 0. 44m mの大きさを有するプリ記録エリア 105を予め設けるように構成してもよ 、。  [0059] More specifically, for example, when the area force required for OPC is 0.3 mm in the radial direction of the optical disc 100, and the eccentricity between the LO layer and the L1 layer is 0.03 mm. The pre-recording area 105 preferably has a size of 0.3 + 0.03 X 2 = 0.36 mm in the radial direction. However, the eccentricity is not a physical quantity that can be recognized in advance when the optical disc 100 is manufactured. For this reason, for example, if the optical disc 100 is a DVD, the maximum eccentricity allowed in the standard, “0.07 mm”, is regarded as the magnitude of the eccentricity, and 0.3 + 0.07 X 2 = 0.44 mm A pre-recording area 105 having a size may be provided in advance.
[0060] 次に、本実施例に係る情報記録媒体のデータ構造について、図 3を参照しながらよ り詳細に説明する。ここに、図 3は、本実施例に係る情報記録媒体のデータ構造のよ り詳細な例を概念的に示すデータ構造図である。  Next, the data structure of the information recording medium according to the present embodiment will be described in more detail with reference to FIG. FIG. 3 is a data structure diagram conceptually showing a more detailed example of the data structure of the information recording medium according to the present embodiment.
[0061] 図 3に示すように、リードインエリア 102は更に細分化され、イニシャルゾーン、バッ ファゾーン # 0、物理フォーマット情報ゾーン（R- Physical Format Information Zone)、 参照コードゾーン（Reference Code Zone)、バッファゾーン # 1、コントロールデータゾ ーン（Control Data Zone)及び特別ボーダーゾーンを含んでいる。  [0061] As shown in FIG. 3, the lead-in area 102 is further subdivided into an initial zone, a buffer zone # 0, a physical format information zone (R-Physical Format Information Zone), a reference code zone (Reference Code Zone), Includes buffer zone # 1, control data zone and special border zone.
[0062] 本実施例では特に、コントロールデータゾーンは、図 2におけるプリ記録エリア 105 に相当する記録領域であり、例えば光ディスク 100が適用して 、る規格のタイプや、 ディスクサイズ、トラックパスの種別等の各種制御データが予め記録されている。即ち 、この場合におけるプリ情報としての所定のデータは、 "00h"等に限られることなぐ 各種制御データを適切に示す意味のあるデータであることが好ましい。そして、上述 したように、このコントロールデータゾーンが、 PCA113及びマージンエリア 116と対 応しており、且つその大きさも PCA113及びマージンエリア 116に相当する大きさ（ 例えば、上述の如く 0. 36mmや 0. 44mm等）となる。 [0062] Particularly in the present embodiment, the control data zone is a recording area corresponding to the pre-recording area 105 in FIG. 2, for example, the standard type, disc size, and track path type applied to the optical disc 100. Etc. are recorded in advance. That is, the predetermined data as the pre-information in this case is not limited to “00h” or the like. It is preferable that the data is meaningful to appropriately indicate various control data. As described above, the control data zone corresponds to the PCA 113 and the margin area 116, and the size thereof corresponds to the PCA 113 and the margin area 116 (for example, 0.36 mm or 0 as described above). 44mm etc.)
[0063] ここで、本実施例に係る情報記録媒体の比較例について、図 4を参照しながら説明 する。ここに、図 4は、比較例に係る情報記録媒体のデータ構造の例を概念的に示 すデータ構造図である。 Here, a comparative example of the information recording medium according to the present embodiment will be described with reference to FIG. FIG. 4 is a data structure diagram conceptually showing an example of the data structure of the information recording medium according to the comparative example.
[0064] 図 4に示すように、比較例に係る光ディスクのリードインエリア 102及びリードアウト エリア 108も、本実施例に係る光ディスクと同様のデータ構造を採用している。ここに 、比較例に係る光ディスクは、 DVD (特に、 DVD— RZRW)の規格上推奨されてい るデータ構造である。しかしながら、比較例に係る光ディスクでは、 PCA113に対応 する LO層の記録領域の一部において、データが未記録であるバッファゾーン # 1が 含まれている。具体的には、上述の実施例に係る光ディスク 100と比較して、ィ -シャ ルゾーンが相対的に大きな領域となり、コントロールゾーンが相対的に小さな領域 (よ り具体的には、 105トラックに跨る大きさであり、径方向に概ね 0. 078mm程度）とな つている。従って、このバッファゾーン # 1に対応する PCA113において OPCを行な つたとしても、データが記録済である L0層の記録領域に対応する L1層にデータを記 録する際の最適な記録レーザパワーを求めることはできない。  As shown in FIG. 4, the lead-in area 102 and the lead-out area 108 of the optical disc according to the comparative example also adopt the same data structure as that of the optical disc according to the present embodiment. Here, the optical disc according to the comparative example has a data structure recommended in the DVD (particularly, DVD-RZRW) standard. However, the optical disk according to the comparative example includes buffer zone # 1 in which data is not recorded in a part of the recording area of the LO layer corresponding to PCA113. More specifically, compared to the optical disc 100 according to the above-described embodiment, the primary zone is a relatively large area and the control zone is a relatively small area (more specifically, it extends over 105 tracks). The size is about 0.078mm in the radial direction). Therefore, even if OPC is performed in the PCA 113 corresponding to this buffer zone # 1, the optimum recording laser power for recording data in the L1 layer corresponding to the recording area of the L0 layer where data has already been recorded is obtained. I can't ask for it.
[0065] しかるに本実施例によれば、 PCA113に対応する LO層にはプリ記録エリア 105 (即 ち、コントロールデータゾーン）が設けられており、且つプリ記録エリア 105には予め 所定のデータが記録されている。これは、比較例に係る光ディスクと比較して、 LO層 のイニシャルゾーンを相対的に小さな記録領域にし、対してコントロールデータゾー ンを相対的に大きな記録領域にすることで実現できている。このようにエリアのサイズ を変更したとしても、データ構造自体に変更は加えられていないため、データの記録 及び再生には支障はない。また、コントロールデータゾーンには、予め制御情報等が 記録されて 、るため、敢えて特別なプリ記録エリア 105を設ける必要な 、と 、う利点 をも兼ね備えている。  However, according to the present embodiment, the pre-recording area 105 (that is, the control data zone) is provided in the LO layer corresponding to the PCA 113, and predetermined data is recorded in the pre-recording area 105 in advance. Has been. This can be realized by making the LO zone initial zone a relatively small recording area and the control data zone a relatively large recording area as compared with the optical disk according to the comparative example. Even if the size of the area is changed in this way, there is no problem in data recording and reproduction because the data structure itself is not changed. Further, since control information and the like are recorded in advance in the control data zone, it is necessary to provide a special pre-recording area 105.
[0066] このため、 L1層の最適な記録レーザパワーを求める場合において、データが記録 済である LO層に対応する PCA113に、後述の OPCパターンを記録することができる 。即ち、データが記録済であるプリ記録エリア 105を介して後述の光ピックアップより 発せられるレーザ光 LBを、 PCA113に照射することができる。これにより、データが 記録済である LO層の記録領域に対応する L 1層にデータを記録する際の最適な記 録レーザパワーを適切に且つ確実に求めることが可能となる。そして、 PCA103にお V、て OPCを行なうことで、 L0層における最適な記録レーザパワーを求めることもでき る。 [0066] Therefore, when the optimum recording laser power of the L1 layer is obtained, the data is recorded. The OPC pattern described later can be recorded on the PCA 113 corresponding to the already completed LO layer. That is, it is possible to irradiate the PCA 113 with a laser beam LB emitted from an optical pickup, which will be described later, through the pre-recording area 105 where data has been recorded. As a result, the optimum recording laser power for recording data in the L 1 layer corresponding to the recording area of the LO layer where data has already been recorded can be obtained appropriately and reliably. Then, the optimum recording laser power in the L0 layer can be obtained by performing V and OPC on the PCA103.
[0067] これにより、 LO層にデータを記録した後 L1層にデータを記録する態様の光ディスク において、 LO層及び L1層の夫々における最適な記録レーザパワーを共に求めるこ とができるという大きな利点を有している。特に、現在市場に流通している或いは今 後流通すると見込まれる 2層型の光ディスクは、概ね LO層にデータを記録した後に L 1層にデータを記録する態様を採っている。従って、本実施例によれば、このような巿 場に流通して 、る或いは流通すると見込まれる 2層型の光ディスクにお 、ても、夫々 の記録層にお 、て最適な記録レーザパワーを求めることができると 、う点で、市場性 にお 、ても優れた利点を有して 、る。  [0067] Thus, in an optical disc in which data is recorded in the L1 layer after data is recorded in the LO layer, it is possible to obtain the great advantage that both the optimum recording laser power in each of the LO layer and the L1 layer can be obtained. Have. In particular, two-layer type optical discs currently on the market or expected to be distributed in the future generally take the form of recording data in the L1 layer after recording data in the LO layer. Therefore, according to the present embodiment, even in a two-layer type optical disc that is distributed or expected to be distributed in such a field, an optimum recording laser power is applied to each recording layer. If it can be obtained, it has excellent advantages in terms of marketability.
[0068] カロえて、マージンエリア 116を設けることで、偏心の影響を排除することができる。具 体的には、仮にマージンエリア 116を設けな力つたとすると、偏心の影響によりプリ記 録エリア 105の端部と PCA113の端部とがずれるおそれがある。即ち、夫々の記録 層にお 、て同一のトラック番号或いはアドレス値を有して!/、るはずのプリ記録エリア 1 05を介して PCA113にレーザ光 LBを照射することができないおそれがある。しかる に本実施例の如くマージンエリアを設けることで、このような偏心によるズレを排除し、 プリ記録エリア 105を介してレーザ光 LBを PCA113に照射することが可能となる。  [0068] By providing margin area 116, the influence of eccentricity can be eliminated. Specifically, if the margin area 116 is used with force, the end of the pre-recording area 105 and the end of the PCA 113 may be shifted due to the eccentricity. That is, there is a possibility that the laser beam LB cannot be irradiated to the PCA 113 via the pre-recording area 105 that should have the same track number or address value in each recording layer! However, by providing a margin area as in this embodiment, it is possible to eliminate such deviation due to eccentricity and to irradiate the PCA 113 with the laser beam LB via the pre-recording area 105.
[0069] 尚、マージンエリア 116は必ずしもなくてもよい。即ち、偏心の影響を排除すること ができるという利点はある力 データが記録済である L0層の記録領域に対応する L1 層にデータを記録する際の最適な記録レーザパワーを適切に且つ確実に求めること ができると!、う観点からは必ずしも必要ではな 、。例えば偏心がな 、場合や、或 、は プリ記録エリア 105と PCA113とを高精度に対応付けることができれば、マージンエリ ァ 116はなくとも、上述の各種利益を享受することができる。また、マージンエリア 11 6を設けたとしても、夫々のマージンエリア 116力 LO層のコントロールデータゾーン を挟むバッファゾーン # 1或いは特別ボーダーゾーンと重なるように構成してもよ 、。 Note that the margin area 116 is not necessarily required. In other words, the advantage of being able to eliminate the influence of eccentricity is the advantage that certain force data is recorded. It is not always necessary from the viewpoint of being able to ask! For example, if there is no eccentricity, or if the pre-recording area 105 and the PCA 113 can be associated with high accuracy, the above-described various benefits can be enjoyed without the margin area 116. Margin area 11 Even if 6 is provided, it may be configured so that it overlaps the buffer area # 1 or the special border zone that sandwiches the control data zone of each margin area 116 force LO layer.
[0070] ここで、具体的に、 2層型の光ディスクにおける記録条件について、図 5を参照しな 力 説明する。ここに、図 5は、本実施例における情報記録媒体にデータを記録する 条件を示す表である。 Here, specifically, the recording conditions in the two-layer type optical disc will be described with reference to FIG. FIG. 5 is a table showing conditions for recording data on the information recording medium in this embodiment.
[0071] 図 5に示すように、 LO層においては、条件 1、 2及び 3の 3つの記録条件に区別され る。また、 L1層においては、条件 2、 3及び 4の 3つの記録条件に区別される。図中に 示す丸囲み数字は、夫々の記録層において、データの記録が行なわれる順番を示 しているものである。  [0071] As shown in FIG. 5, the LO layer is classified into three recording conditions, conditions 1, 2 and 3. In the L1 layer, there are three types of recording conditions, conditions 2, 3 and 4. The encircled numbers shown in the figure indicate the order in which data is recorded in each recording layer.
[0072] 具体的には、 LO層における記録条件 1は、データが未記録の L1層の記録領域に 対応する LO層の記録領域にデータを記録する場合を示す。特に、 LO層においてデ ータが記録された後も（特に、そのデータを再生する際にも）、対応する L1層の記録 領域にはデータは記録されな 、。  Specifically, the recording condition 1 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer where data is not recorded. In particular, even after data is recorded in the LO layer (especially when the data is played back), no data is recorded in the corresponding recording area of the L1 layer.
[0073] LO層における記録条件 2は、データが未記録の L1層の記録領域に対応する LO層 の記録領域にデータを記録する場合を示すと ヽぅ点では記録条件 1と同じである。記 録条件 2は特に、 LO層においてデータが記録された後に (例えば、そのデータを再 生する際に）、対応する L1層の記録領域にデータが記録される場合を示している。こ れは、記録する場合に対応する L1層にデータが記録されていなくとも、該記録され たデータを再生する場合に対応する L1層にデータが記録されて!ヽると、データの再 生品質 (例えば、再生信号のァシンメトリ値等)が異なるためである。  [0073] The recording condition 2 in the LO layer is the same as the recording condition 1 in the saddle point when data is recorded in the recording area in the LO layer corresponding to the recording area in the L1 layer where data is not recorded. Recording condition 2 particularly shows the case where data is recorded in the corresponding recording area of the L1 layer after the data is recorded in the LO layer (for example, when the data is played back). This means that even if data is not recorded on the L1 layer corresponding to the recording, the data is recorded on the L1 layer corresponding to the case where the recorded data is reproduced. This is because the quality (for example, the asymmetry value of the reproduction signal) is different.
[0074] LO層における記録条件 3は、データが記録済の L1層の記録領域に対応する LO層 の記録領域にデータを記録する場合を示す。即ち、先に L1層にデータが記録され た後に LO層にデータが記録される場合を示す。  [0074] Recording condition 3 in the LO layer indicates a case where data is recorded in the recording area of the LO layer corresponding to the recording area of the L1 layer in which the data has been recorded. In other words, the data is recorded in the LO layer after the data is recorded in the L1 layer first.
[0075] 続いて、 L1層における記録条件 2は、データが記録済の LO層の記録領域に対応 する L1層の記録領域にデータを記録する場合を示す。即ち、先に LO層にデータが 記録された後に L1層にデータが記録される場合を示す。  Subsequently, recording condition 2 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which data has already been recorded. In other words, the data is recorded in the L1 layer after the data is recorded in the LO layer first.
[0076] L1層における記録条件 3は、データが未記録の LO層の記録領域に対応する L1層 の記録領域にデータを記録する場合を示すと ヽぅ点では記録条件 4と同じである。こ の記録条件 3は特に、 L1層においてデータが記録された後に（特に、そのデータを 再生する際に）、対応する LO層の記録領域にデータが記録される場合を示している [0076] The recording condition 3 in the L1 layer is the same as the recording condition 4 in the case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded. This Recording condition 3 in this example shows the case where the data is recorded in the corresponding recording area of the LO layer after the data is recorded in the L1 layer (especially when the data is reproduced).
[0077] L1層における記録条件 4は、データが未記録の LO層の記録領域に対応する L1層 の記録領域にデータを記録する場合を示す。特に、 L1層においてデータが記録さ れた後も（特に、そのデータを再生する際にも）、対応する LO層の記録領域にはデー タは記録されない。 [0077] Recording condition 4 in the L1 layer indicates a case where data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer where data is not recorded. In particular, even after data is recorded in the L1 layer (especially when the data is played back), no data is recorded in the corresponding LO layer recording area.
[0078] 以上のように、 LO層及び L1層の夫々が上述の 3つの記録条件を有して!/、る。そし て、夫々の記録条件毎に最適な記録レーザパワーは異なる。そして、上述した PCA 103においてなされる OPCにより求められる最適な記録レーザパワーは、 LO層にお ける記録条件 1に対応する最適な記録レーザパワーに相当する。また、 PCA113に おいてなされる OPCにより求められる最適な記録レーザパワーは、 L1層における記 録条件 2に対応する最適な記録レーザパワーに相当する。  [0078] As described above, each of the LO layer and the L1 layer has the above three recording conditions! /. The optimum recording laser power differs for each recording condition. The optimum recording laser power required by the OPC performed in the PCA 103 described above corresponds to the optimum recording laser power corresponding to the recording condition 1 in the LO layer. In addition, the optimum recording laser power required by the OPC performed in the PCA 113 corresponds to the optimum recording laser power corresponding to the recording condition 2 in the L1 layer.
[0079] 但し、図 2中に示した PCA113以外にも別途 PCAを L1層に設ければ、 L1層にお ける他の記録条件下での最適記録レーザパワーをも求めることができることはいうま でもない。  [0079] However, it goes without saying that the optimum recording laser power under other recording conditions in the L1 layer can also be obtained by separately providing PCA in the L1 layer in addition to the PCA113 shown in FIG. Absent.
[0080] 尚、本実施例では、プリ記録エリア 105としてコントロールデータゾーンを例に説明 を進めたが、これに限られるものでなぐ所定のデータが予め記録されていれば他の 記録領域 (例えば、イニシャルゾーンやバッファゾーン等）であってもプリ記録エリア 1 05として用いることが可能であることは!、うまでもな!/、。  In the present embodiment, the description has been made by taking the control data zone as an example of the pre-recording area 105. However, the present invention is not limited to this. If predetermined data is recorded in advance, other recording areas (for example, It is possible to use it as the pre-record area 105 even in the initial zone, buffer zone, etc.!
[0081] 以上の結果、本発明の情報記録媒体に係る実施例によれば、データが記録済であ る LO層の記録領域に対応する L1層にデータを記録する際の最適な記録レーザパヮ 一を適切に且つ確実に求めることが可能となる。また、 LO層における最適な記録レ 一ザパワーを求めることも可能となる。  As a result of the above, according to the embodiment of the information recording medium of the present invention, the optimum recording laser performance when data is recorded in the L1 layer corresponding to the recording area of the LO layer in which the data has already been recorded. Can be obtained appropriately and reliably. It is also possible to find the optimum recording laser power in the LO layer.
[0082] 尚、本実施例では 2層型の光ディスクを具体例として説明した力 それ以上の記録 層を有する多層型の光ディスクについても同様のデータ構造をとることが可能である 。即ち、レーザ光 LBが照射される側（例えば、 LO層の側）から見て、最も或いは相対 的に奥側の記録層における較正用エリアに対応して、該奥側の記録層より手前側に ある少なくとも一つの記録層にお 、てプリ記録エリアが設けられて 、れば、本発明の 範囲に属するものである。即ち、このように構成しても上述した本発明の情報記録媒 体に係る実施例が有する各種利益を享受することができるものである。 Note that, in this embodiment, the same data structure can be adopted for a multi-layer type optical disk having a recording layer with more power than that described as a specific example of a two-layer type optical disk. That is, when viewed from the side irradiated with the laser beam LB (for example, the LO layer side), it corresponds to the calibration area in the innermost recording layer relative to the innermost recording layer. In If a pre-recording area is provided in at least one recording layer, it belongs to the scope of the present invention. That is, even with such a configuration, various benefits of the above-described embodiments of the information recording medium of the present invention can be enjoyed.
[0083] (1)第 1変形例  [0083] (1) First modification
続いて、図 6を参照して、本発明の情報記録媒体に係る実施例の第 1変形例につ いて説明する。ここに、図 6は、第 1変形例に係る情報記録媒体のデータ構造を概念 的に示すデータ構造図である。  Next, a first modification of the embodiment according to the information recording medium of the present invention will be described with reference to FIG. FIG. 6 is a data structure diagram conceptually showing the data structure of the information recording medium according to the first modification.
[0084] 図 6に示すように、第 1変形例に係る光ディスク 100aの LO層には、 PCA103、記録 管理情報ゾーン 104、リードインエリア 102、図示しないデータ記録エリア 107及び図 示しないリードアウトエリア 108が設けられている。また、 L1層には、リザーブドエリア 、記録管理情報ゾーン 114、リードインエリア 112、図示しないデータ記録エリア 117 及び図示しないリードアウトエリア 118が設けられている。即ち、光ディスク 100aはパ ラレルトラックパス方式の光ディスクである。  [0084] As shown in FIG. 6, the LO layer of the optical disc 100a according to the first modification includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107 (not shown), and a lead-out area not shown. 108 is provided. The L1 layer includes a reserved area, a recording management information zone 114, a lead-in area 112, a data recording area 117 (not shown), and a lead-out area 118 (not shown). That is, the optical disc 100a is a parallel track path type optical disc.
[0085] このパラレルトラックパス方式の光ディスク 100aも、図 2或いは図 3に示す光ディスク と同様に、 LO層においてプリ記録エリア 105を含んでおり、且つプリ記録エリア 105 に対応する L1層の記録領域には、 PCA113及びマージンエリア 116が設けられて いる。プリ記録エリア 105は、上述の如くコントロールデータゾーンであってもよいし、 或いは他の記録領域であってもよ!/、。  [0085] This optical disk 100a of the parallel track path type also includes the pre-recording area 105 in the LO layer and the recording area of the L1 layer corresponding to the pre-recording area 105, as in the optical disk shown in FIG. 2 or FIG. PCA 113 and margin area 116 are provided. The pre-recording area 105 may be the control data zone as described above, or may be another recording area! /.
[0086] 従って、第 1変形例に係る光ディスク 100aにおいても、本実施例に係る光ディスク 1 00が有する利益と同様の利益を享受することが可能である。  Accordingly, the optical disc 100a according to the first modified example can also receive the same benefits as those provided by the optical disc 100 according to the present embodiment.
[0087] (2)第 2変形例  [0087] (2) Second modification
続いて、図 7を参照して、本発明の情報記録媒体に係る実施例の第 2変形例につ いて説明する。ここに、図 7は、第 2変形例に係る情報記録媒体のデータ構造を概念 的に示すデータ構造図である。  Next, a second modification of the embodiment according to the information recording medium of the present invention will be described with reference to FIG. FIG. 7 is a data structure diagram conceptually showing the data structure of the information recording medium in the second modified example.
[0088] 図 7に示すように、第 2変形例に係る光ディスク 100bの LO層には、 PCA103、記録 管理情報ゾーン 104、リードインエリア 102、データ記録エリア 107、リザーブドエリア 及びミドルエリア 109が設けられている。また、 L1層には、リザーブドエリア、リードア ゥトエリア 118、データ記録エリア 117、リザーブドエリア及びミドルエリア 119が設け られている。即ち、光ディスク 100bはォポジットトラックパス方式の光ディスクである。 [0088] As shown in FIG. 7, the LO layer of the optical disc 100b according to the second modification includes a PCA 103, a recording management information zone 104, a lead-in area 102, a data recording area 107, a reserved area, and a middle area 109. Is provided. The L1 layer has a reserved area, a read-out area 118, a data recording area 117, a reserved area, and a middle area 119. It has been. That is, the optical disc 100b is an opposite track path type optical disc.
[0089] 第 2変形例に係る光ディスク 100bは特に、ミドルエリア 109内にプリ記録エリア 105 が設けられている。そして、 L1層の PCA113もそれに伴って、ミドルエリア 109内に 設けられている。 In particular, the optical disc 100b according to the second modification is provided with a pre-recording area 105 in the middle area 109. The L1 layer PCA 113 is also provided in the middle area 109 accordingly.
[0090] このように構成しても、 PCA113及びマージンエリア 116に対応する LO層にプリ記 録エリア 105が設けられていれば、上述した各種利益を享受することが可能である。 言 、換えれば、プリ記録エリア 105と PCA113 (更に加えてマージンエリア 116も）と が対応して設けられていれば、上述の各種利益を享受することができる。即ち、プリ 記録エリア 105と PCA113とが対応していれば、それがリードインエリア 102 (112) 内にあろうが、データ記録エリア 107 (117)内にあろうが、リードアウトエリア 108 (11 8)内にあろうが、ミドルエリア 109 (119)内にあろうが、或いはその他の記録領域に あろうが、上述の各種利益を享受することが可能である。  Even with this configuration, if the pre-recording area 105 is provided in the LO layer corresponding to the PCA 113 and the margin area 116, it is possible to receive the various benefits described above. In other words, if the pre-recording area 105 and the PCA 113 (and also the margin area 116) are provided in correspondence with each other, the above-described various benefits can be enjoyed. That is, if the pre-recording area 105 and the PCA 113 correspond, it may be in the lead-in area 102 (112) or the data recording area 107 (117), but the lead-out area 108 (11 Whether it is in 8), in the middle area 109 (119), or in other recording areas, it is possible to enjoy the various benefits described above.
[0091] 尚、第 2変形例では、ォポジットトラックパス方式の光ディスクを例に説明した力 も ちろんパラレルトラックパス方式の光ディスクにおいても同様の構造をとることは可能 である。  Note that, in the second modification, the same structure can be adopted in the parallel track path type optical disc as well as the force described with the opposite track path type optical disc as an example.
[0092] (情報記録装置の実施例）  [Example of information recording apparatus]
続いて、図 8を参照して、本発明の情報記録装置に係る実施例について説明を進 める。  Next, with reference to FIG. 8, description will be given on an embodiment of the information recording apparatus of the present invention.
ここに、図 8は、本実施例に係る情報記録装置の基本構成を概念的に示すブロック 図である。  FIG. 8 is a block diagram conceptually showing the basic structure of the information recording apparatus in the example.
[0093] 図 8を参照して情報記録装置 300の内部構成を説明する。情報記録装置 300は、 CPU (ドライブ制御手段） 354の制御下で、光ディスク 100に情報を記録すると共に、 光ディスク 100に記録された情報を読み取る装置である。  The internal configuration of the information recording apparatus 300 will be described with reference to FIG. The information recording device 300 is a device that records information on the optical disc 100 and reads information recorded on the optical disc 100 under the control of a CPU (drive control means) 354.
[0094] 情報記録装置 300は、光ディスク 100、スピンドルモータ 351、光ピックアップ 352、 信号記録再生手段 353、 CPU (ドライブ制御手段） 354、メモリ 355、データ入出力 制御手段 356、 LDドライバ 358、 OPCパターン発生器 359、及びバス 357により構 成されている。  [0094] The information recording apparatus 300 includes an optical disc 100, a spindle motor 351, an optical pickup 352, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 356, an LD driver 358, an OPC pattern. It consists of generator 359 and bus 357.
[0095] スピンドルモータ 351は光ディスク 100を回転及び停止させるもので、光ディスクへ のアクセス時に動作する。より詳細には、スピンドルモータ 351は、図示しないサーボ ユニット等によりスピンドルサーボを受けつつ所定速度で光ディスク 100を回転及び 停止させるように構成されて 、る。 [0095] The spindle motor 351 rotates and stops the optical disc 100. Operates when accessing. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a not-shown servo unit or the like.
[0096] 光ピックアップ 352は、本発明における「記録手段」の一具体例であって、光デイス ク 100への記録再生を行うもので、レーザ装置とレンズから構成される。より詳細には 、光ピックアップ 352は、光ディスク 100に対してレーザビーム等の光ビームを、再生 時には読み取り光として第 1のパワーで照射し、記録時には書き込み光として第 2の パワーで且つ変調させながら照射する。  The optical pickup 352 is a specific example of the “recording unit” in the present invention, and performs recording / reproduction on the optical disk 100, and includes a laser device and a lens. More specifically, the optical pickup 352 irradiates the optical disc 100 with a light beam such as a laser beam at a first power as a read light during reproduction, and modulates with a second power as a write light at the time of recording. Irradiate.
[0097] 信号記録再生手段 353は、スピンドルモータ 351と光ピックアップ 352を制御するこ とで光ディスク 100に対して記録再生を行う。  The signal recording / reproducing means 353 performs recording / reproduction with respect to the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352.
[0098] メモリ 355は、記録再生データのバッファ領域や、信号記録再生手段 353で使用出 来るデータに変換する時の中間バッファとして使用される領域など情報記録装置 30 0におけるデータ処理全般において使用される。また、メモリ 355はこれらレコーダ機 器としての動作を行うためのプログラムが格納される ROM領域と、映像データの圧 縮伸張で用いるバッファやプログラム動作に必要な変数が格納される RAM領域など から構成される。  [0098] The memory 355 is used in general data processing in the information recording apparatus 300, such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converted into data used by the signal recording / reproducing means 353. The Memory 355 is composed of a ROM area where programs for operating these recorder devices are stored, a buffer used for compression / decompression of video data, and a RAM area where variables necessary for program operations are stored. Is done.
[0099] CPU (ドライブ制御手段） 354は、本発明における「制御手段」の一具体例であって 、信号記録再生手段 353、メモリ 355と、バス 357を介して接続され、各制御手段に 指示を行うことで、情報記録装置 300全体の制御を行う。通常、 CPU354が動作す るためのソフトウェアは、メモリ 355に格納されている。  The CPU (drive control means) 354 is a specific example of the “control means” in the present invention, and is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and instructs each control means. To control the information recording apparatus 300 as a whole. Normally, software for operating the CPU 354 is stored in the memory 355.
[0100] データ入出力制御手段 356は、例えば外部機器等から、光ディスク 100に記録す べきデータの入力が行なわれる。そして、データ入出力手段 356は、入力されたデー タを、バス 357を介して信号記録再生手段 353へ出力する。尚、光ディスク 100に記 録されたデータを再生可能な場合は、データ入出力手段 356は、液晶ディスプレイ 等の外部出力機器へ再生されたデータを出力可能に構成されてもよい。  Data input / output control means 356 inputs data to be recorded on optical disc 100 from, for example, an external device. Then, the data input / output unit 356 outputs the input data to the signal recording / reproducing unit 353 via the bus 357. When data recorded on the optical disc 100 can be reproduced, the data input / output means 356 may be configured to output the reproduced data to an external output device such as a liquid crystal display.
[0101] OPCパターン発生器 359は、後述する各種ストラテジを用いて、本発明における「 パターン情報」の一具体例たる所定の OPCパターンを生成するために用いられる。  [0101] The OPC pattern generator 359 is used to generate a predetermined OPC pattern as a specific example of "pattern information" in the present invention, using various strategies described later.
[0102] LDドライバ 358は、光ピックアップ 352のレーザダイオード等を所定の周波数で発 振させることで、該光ピックアップ 352から照射されるレーザビームを制御する。 [0102] The LD driver 358 emits a laser diode or the like of the optical pickup 352 at a predetermined frequency. By oscillating, the laser beam emitted from the optical pickup 352 is controlled.
[0103] 本実施例では特に、上述した実施例に係る光ディスク 100にデータを記録する。特 に、 LO層にデータを記録した後に L1層にデータを記録する。言い換えれば、 LO層 にデータを記録するのはいつでもよいが、 L1層にデータを記録する場合には、デー タが記録されている LO層の記録領域に対応する L1層の記録領域にデータを記録す る。そして、上述したように、 PCA103或いは PCA113において OPCを行なうことで 、データの記録時における最適な記録レーザパワーを適切且つ確実に求めることが できる。従って、データの記録品質を向上させることができ、ひいては当該記録され たデータの再生品質をも向上させることができるという利点を有する。 In this embodiment, in particular, data is recorded on the optical disc 100 according to the above-described embodiment. In particular, data is recorded in the L1 layer after data is recorded in the LO layer. In other words, data can be recorded in the LO layer at any time, but when data is recorded in the L1 layer, the data is recorded in the recording area of the L1 layer corresponding to the recording area of the LO layer in which the data is recorded. Record. As described above, by performing OPC in the PCA 103 or PCA 113, the optimum recording laser power at the time of data recording can be obtained appropriately and reliably. Therefore, there is an advantage that the recording quality of data can be improved, and the reproduction quality of the recorded data can also be improved.
[0104] ここで、 OPC処理について簡単に説明を加える。まず本発明における「算出手段」 の一具体例たる CPU354による制御下で、光ピックアップ 352がリードインエリア 102 内に設けられた PCA103或いは PCA113へ移動され、 OPCパターン発生器 359及 び LDドライバ 358の動作により、順次段階的に (例えば、相互に異なる 16段階の）記 録レーザパワーが切り換えられて、 OPCパターンが PCA103或いは PCA113に記 録される。例えば 2Tパルスに相当する短ピット（マーク)及び 8Tパルスに相当する長 ピット（マーク）を夫々同一の長さの無記録区間 (スペース）と共に交互に形成した記 録パターンが一つの例として挙げられる。そして、この記録パターンを実現するレー ザビームの波形は、情報記録装置 300が有する所定のストラテジにより規定される。 Here, a brief description of the OPC process will be added. First, the optical pickup 352 is moved to the PCA 103 or PCA 113 provided in the lead-in area 102 under the control of the CPU 354 as one specific example of the “calculation means” in the present invention, and the OPC pattern generator 359 and the LD driver 358 According to the operation, the recording laser power is switched sequentially step by step (for example, 16 steps different from each other), and the OPC pattern is recorded in the PCA103 or PCA113. For example, a recording pattern in which short pits (marks) corresponding to 2T pulses and long pits (marks) corresponding to 8T pulses are alternately formed with no-recording sections (spaces) of the same length is given as an example. . The waveform of the laser beam that realizes this recording pattern is defined by a predetermined strategy that the information recording apparatus 300 has.
[0105] LDドライバ 358は、この OPCパターン発生器 359から出力される OPCパターンに より、記録レーザパワーを順次段階的に切り換えるように、光ピックアップ 352内の半 導体レーザを駆動する。 The LD driver 358 drives the semiconductor laser in the optical pickup 352 so that the recording laser power is sequentially switched in accordance with the OPC pattern output from the OPC pattern generator 359.
[0106] 更に、このような PCA103或いは PCA113への OPCパターンの記録完了後には、 CPU354の制御下で、 PCA103或!、は PCA113にお!/、て試し書きされた OPCパタ ーンが再生される。具体的には、図示しないエンベロープ検波器に入力された RF信 号より、当該 RF信号のエンベロープ検波のピーク値及びボトム値がサンプリングされ る。その後、このような OPCパターンの再生力 1回の OPC処理において、例えば記 録された OPCパターンの回数に応じて行われた後に、最適な記録レーザパワーが 決定される。即ち、これらのピーク値及びボトム値より求められるァシンメトリから、例え ば記録特性の品質を表すジッタ値が最小付近となるような最適な記録レーザパワー が求められる。 [0106] Further, after the recording of the OPC pattern to the PCA 103 or PCA 113 is completed, the OPC pattern that has been trial-written to the PCA 103 or! Or PCA 113 is reproduced under the control of the CPU 354. The Specifically, the peak value and the bottom value of the envelope detection of the RF signal are sampled from the RF signal input to the envelope detector (not shown). After that, such OPC pattern reproduction power is performed once in accordance with the number of recorded OPC patterns in one OPC process, and then the optimum recording laser power is determined. That is, from the asymmetry obtained from these peak and bottom values, for example For example, the optimum recording laser power is required so that the jitter value representing the quality of the recording characteristics is near the minimum.
[0107] 尚、図 8を参照して説明した本実施例に係る情報記録装置 300は、情報記録再生 装置の実施例も兼ねる。即ち、光ピックアップ 352や信号記録再生手段 353 (例えば 、図示しないヘッドアンプや RF検出器等）を介して、記録情報を再生可能であり、本 実施例は、情報再生装置の機能或!、は情報記録再生装置の機能を含む。  Note that the information recording apparatus 300 according to the present embodiment described with reference to FIG. 8 also serves as an embodiment of the information recording / reproducing apparatus. That is, the recorded information can be reproduced via the optical pickup 352 and the signal recording / reproducing means 353 (for example, a head amplifier or an RF detector not shown). Includes functions of information recording / reproducing apparatus.
[0108] また、上述の実施例では、情報記録媒体の一例として光ディスク 100及び情報記 録装置の一例として光ディスク 100に係るレコーダについて説明した力 本発明は、 光ディスク及びそのレコーダに限られるものではなぐ他の高密度記録或いは高転送 レート対応の各種情報記録媒体並びにそのレコーダにも適用可能である。  Further, in the above-described embodiment, the power described for the optical disc 100 as an example of the information recording medium and the recorder according to the optical disc 100 as an example of the information recording device. The present invention is not limited to the optical disc and the recorder. The present invention can also be applied to other high-density recording or various information recording media compatible with high transfer rates and their recorders.
[0109] 本発明は、上述した実施例に限られるものではなぐ請求の範囲及び明細書全体 力 読み取れる発明の要旨或いは思想に反しない範囲で適宜変更可能であり、その ような変更を伴なう情報記録媒体、情報記録装置及び方法、並びに、記録制御用の コンピュータプログラムもまた本発明の技術的範囲に含まれるものである。  [0109] The present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read. An information recording medium, an information recording apparatus and method, and a computer program for recording control are also included in the technical scope of the present invention.
産業上の利用可能性  Industrial applicability
[0110] 本発明に係る情報記録媒体、情報記録装置及び方法、並びにコンピュータプログ ラムは、例えば、 DVD等の高密度光ディスクに利用可能であり、更に DVDレコーダ 等の情報記録装置に利用可能である。また、例えば民生用或いは業務用の各種コ ンピュータ機器に搭載される又は各種コンピュータ機器に接続可能な情報記録装置 等にも利用可能である。 [0110] The information recording medium, information recording apparatus and method, and computer program according to the present invention can be used for, for example, a high-density optical disk such as a DVD, and can also be used for an information recording apparatus such as a DVD recorder. . Further, the present invention can be used for an information recording device or the like that is mounted on or can be connected to various computer devices for consumer use or business use, for example.

Claims

請求の範囲 The scope of the claims
[1] レーザ光を照射して記録情報を記録するための第 1記録層と、  [1] a first recording layer for recording information by irradiating a laser beam;
前記第 1記録層を介して前記レーザ光を照射することで前記記録情報を記録する ための第 2記録層と  A second recording layer for recording the recording information by irradiating the laser light through the first recording layer;
を備え、  With
前記第 1記録層は、予めプリ情報が記録されたプリ記録エリアを有しており、 前記第 2記録層は、前記プリ記録エリアを介して前記レーザ光が照射される位置に The first recording layer has a pre-recording area in which pre-information is recorded in advance, and the second recording layer is located at a position where the laser beam is irradiated through the pre-recording area.
、前記第 2記録層における前記レーザ光の最適パワーを求めるためのパターン情報 を記録するための較正用エリアを有していることを特徴とする情報記録媒体。 An information recording medium comprising a calibration area for recording pattern information for obtaining an optimum power of the laser beam in the second recording layer.
[2] 前記プリ情報は、前記プリ記録エリアへの前記レーザ光の照射によって記録された 情報を含んでなることを特徴とする請求の範囲第 1項に記載の情報記録媒体。 2. The information recording medium according to claim 1, wherein the pre-information includes information recorded by irradiating the pre-recording area with the laser beam.
[3] 前記プリ情報は、予め形成されたエンボスピットによって記録された情報を含んでな ることを特徴とする請求の範囲第 1項に記載の情報記録媒体。 3. The information recording medium according to claim 1, wherein the pre-information includes information recorded by previously formed emboss pits.
[4] 前記プリ記録エリアは、前記較正用エリアよりも大きいことを特徴とする請求の範囲 第 1項に記載の情報記録媒体。 4. The information recording medium according to claim 1, wherein the pre-recording area is larger than the calibration area.
[5] 前記プリ記録エリアは、前記第 1記録層と前記第 2記録層との偏心の大きさに相当 する領域だけ前記較正用エリアより大きいことを特徴とする請求の範囲第 4項に記載 の情報記録媒体。 5. The pre-recording area according to claim 4, wherein the pre-recording area is larger than the calibration area by an area corresponding to an eccentricity between the first recording layer and the second recording layer. Information recording media.
[6] 請求の範囲第 1項に記載の情報記録媒体に前記記録情報を記録可能な記録手段 と、  [6] Recording means capable of recording the recording information on the information recording medium according to claim 1;
前記プリ記録エリアを介して前記較正用エリアに前記レーザ光を照射して前記バタ ーン情報を記録するように前記記録手段を制御し、前記第 2記録層における前記レ 一ザ光の最適パワーを求める算出手段と、  The recording means is controlled to record the pattern information by irradiating the laser light to the calibration area via the pre-recording area, and the optimum power of the laser light in the second recording layer Calculating means for obtaining
該求められた最適パワーで前記レーザ光を照射して前記記録情報を前記第 2記録 層へ記録するように前記記録手段を制御する制御手段と  Control means for controlling the recording means so as to record the recording information on the second recording layer by irradiating the laser beam with the determined optimum power.
を備えることを特徴とする情報記録装置。  An information recording apparatus comprising:
[7] 前記制御手段は、前記第 1記録層へ前記記録情報を記録した後に、前記第 2記録 層へ前記記録情報を記録するように前記記録手段を制御することを特徴とする請求 の範囲第 6項に記載の情報記録装置。 [7] The control means controls the recording means to record the recording information on the second recording layer after recording the recording information on the first recording layer. The information recording device according to item 6 of the scope.
[8] 請求の範囲第 1項に記載の情報記録媒体に前記記録情報を記録可能な記録手段 を備える情報記録装置における情報記録方法であって、 [8] An information recording method in an information recording apparatus comprising recording means capable of recording the recording information on the information recording medium according to claim 1.
前記プリ記録エリアを介して前記較正用エリアに前記レーザ光を照射して前記バタ ーン情報を記録するように前記記録手段を制御し、前記第 2記録層における前記レ 一ザ光の最適パワーを求める算出工程と、  The recording means is controlled to record the pattern information by irradiating the laser light to the calibration area via the pre-recording area, and the optimum power of the laser light in the second recording layer A calculation step for obtaining
該求められた最適パワーで前記レーザ光を照射して前記記録情報を前記第 2記録 層へ記録するように前記記録手段を制御する制御工程と  A control step of controlling the recording means so as to record the recorded information on the second recording layer by irradiating the laser beam with the determined optimum power;
を備えることを特徴とする情報記録方法。  An information recording method comprising:
[9] 請求の範囲第 6項に記載の情報記録装置に備えられたコンピュータを制御する記 録制御用のコンピュータプログラムであって、該コンピュータを、前記記録手段、前記 算出手段及び前記制御手段の少なくとも一部として機能させることを特徴とするコン ピュータプログラム。 [9] A recording control computer program for controlling a computer provided in the information recording apparatus according to claim 6, wherein the computer includes the recording means, the calculating means, and the control means. A computer program characterized by functioning as at least a part.
PCT/JP2005/016394 2004-09-09 2005-09-07 Information recording medium, information recording device and method, and computer program WO2006028115A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-262619 2004-09-09
JP2004262619 2004-09-09

Publications (1)

Publication Number Publication Date
WO2006028115A1 true WO2006028115A1 (en) 2006-03-16

Family

ID=36036396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/016394 WO2006028115A1 (en) 2004-09-09 2005-09-07 Information recording medium, information recording device and method, and computer program

Country Status (2)

Country Link
TW (1) TW200623108A (en)
WO (1) WO2006028115A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311346A (en) * 1999-04-26 2000-11-07 Ricoh Co Ltd Optical disk recording and reproducing device and optimum power value deciding method for optical disk
JP2001052337A (en) * 1999-08-06 2001-02-23 Ricoh Co Ltd Method and device for determining optimum recording power value
WO2002023542A1 (en) * 2000-09-13 2002-03-21 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and optical information recording method, optical information recording device
JP2005174527A (en) * 2003-11-21 2005-06-30 Ricoh Co Ltd Recording method, recording device, program and storage medium
JP2005285254A (en) * 2004-03-30 2005-10-13 Mitsubishi Electric Corp Recording method of optical disk, and optical disk
JP2005322381A (en) * 2004-04-09 2005-11-17 Victor Co Of Japan Ltd Information recording medium, and recording method for information recording medium

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311346A (en) * 1999-04-26 2000-11-07 Ricoh Co Ltd Optical disk recording and reproducing device and optimum power value deciding method for optical disk
JP2001052337A (en) * 1999-08-06 2001-02-23 Ricoh Co Ltd Method and device for determining optimum recording power value
WO2002023542A1 (en) * 2000-09-13 2002-03-21 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and optical information recording method, optical information recording device
JP2005174527A (en) * 2003-11-21 2005-06-30 Ricoh Co Ltd Recording method, recording device, program and storage medium
JP2005285254A (en) * 2004-03-30 2005-10-13 Mitsubishi Electric Corp Recording method of optical disk, and optical disk
JP2005322381A (en) * 2004-04-09 2005-11-17 Victor Co Of Japan Ltd Information recording medium, and recording method for information recording medium

Also Published As

Publication number Publication date
TW200623108A (en) 2006-07-01

Similar Documents

Publication Publication Date Title
US8194516B2 (en) Information recording apparatus and method
JP4200335B2 (en) Information recording medium, and information recording apparatus and method
US20050276212A1 (en) Information record medium, and information record apparatus and method
JP4488316B2 (en) Information recording medium, information recording apparatus and method, and computer program
WO2005116995A1 (en) Information recording medium, information recording device and method, and record controlling computer program
JP4043490B2 (en) Information recording apparatus and method, and computer program
WO2006028114A1 (en) Information recording medium, information recording device and method and computer program
WO2006075645A1 (en) Recording medium, recording device, recording method, and computer program
JP4837945B2 (en) Recording device
JP4502139B2 (en) Information recording apparatus and computer program
WO2006028115A1 (en) Information recording medium, information recording device and method, and computer program
KR100852227B1 (en) Recording device, recording method, and computer program
JP2006179162A6 (en) Information recording apparatus and method, and computer program
JP2006179162A (en) Information recording device and method, and computer program
WO2007046492A1 (en) Information recording medium, information recording device and method, information reproducing device and method, and information recording medium manufacturing device and method
JP4475428B2 (en) Information recording medium, information recording apparatus and method, and computer program
JPWO2007010827A1 (en) Information recording medium, information reproducing apparatus and method, and computer program
JP4877409B2 (en) Recording apparatus and recording method
JPWO2007046493A1 (en) Information recording apparatus and method, computer program, and information recording medium
WO2006073079A1 (en) Recording device, recording method and computer program
WO2005122160A1 (en) Information recording medium and information recording device and method
WO2007138708A1 (en) Information recording medium, information recording device and method, information reproducing device and method, information recording/reproducing device and recording method, and computer program
WO2006121128A1 (en) Information recording medium, information recording device and method, and computer program for record control
JPWO2007072862A1 (en) Information recording apparatus and method, and computer program
JPWO2005122151A1 (en) Information recording apparatus and method, and computer program

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP